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Type of Drug
corticosteroids, Oral (kor-tih-koe-STER-oids)
Brand Names
Betamethasone Celestone
Gerzq(t St D?Pdient: Budesonide Entocort EC
Cortisone Acetate &I
Dexamethasone EQ Mymethasone
Fludrocortisone
Hydrocortisone Cortef
Methylprednisolone 19 Medrol
Prednisolone 10
Orapred    Pediapred
Orapred ODT    Prelone
Prednisone 0 Prednisone Intensol    Sterapred
Prescribed For
A wide variety of disorders from rash to cancer, including adrenal disease, adrenal hormone replacement, bursitis, arthritis, severe skin diseases including psoriasis and other rashes, severe or disabling allergies, asthma, drug or serum sickness, attacks of multiple sclerosis, severe respiratory diseases including pneumonitis, blood disorders, gastrointestinal (GI) disease including ulcerative colitis and Crohn’s disease, and inflammation of the nerves, heart, or other organs. Dexamethasone is also used to treat mountain sickness, vomiting, bronchial disease in premature babies, excessive hairiness, and hearing loss associated with bacterial meningitis. Fludrocortisone is used to treat Addison’s disease and for symptomatic orthostatic hypotension. Prednisone is used to improve strength and function of some muscular dystrophy patients. Methylprednisolone is used to decrease mortality in some patients suffering from severe alcoholism and chronic active hepatitis.
General Information
Produced by the adrenal gland, natural corticosteroids are hormones that affect almost every body system. The major dMeyences among corticosteroid drugs are potency and variation in secondary effects, 0OZ10r preference and past experience with a Mftosferoid usually determine which drug to prescribe for a specific disease.
Cautions and Warnings
Do not use an oral corticosteroid if you are allergic or sensitive to any of its ingredients.
Corticosteroids may mask symptoms of an infection. Because these drugs compromise the immune system, new infections may occur during corticosteroid treatment; when this happens, a relatively minor infection that would respond to ordinary treatment can turn serious. Corticosteroids may impair immune response to hepatitis B, prolonging recovery. They may reactivate dormant amebiasis (a parasitic infection). Corticosteroids should not be taken if you have a fungal blood infection, because they can allow the infection to spread more easily. They should be used with caution by people with herpes eye infection, tuberculosis or in any other bacterial, fungal, or viral infections.
Long-term use of any corticosteroid may increase the risk of developing cataracts, glaucoma, or eye infections, especially viral or fungal.
When stopping a corticosteroid, dosage must be reduced gradually under a doctor’s supervision—otherwise you may experience adrenal gland failure.
If you are taking large corticosteroid doses. you should not receive any live virus vaccine because corticosteroids interfere with the body’s reaction to the vaccine.
Hydrocortisone and cortisone may lead to high blood pressure. Other corticosteroids are less likely to affect blood pressure.
Corticosteroids should be used with caution if you have severe kidney disease.
High-dose or long-term corticosteroid therapy may aggravate or worsen stomach ulcers. This may occur when total dosage reaches 1000 mg of prednisone, 150 mg of betamethasone or dexamethasone, 5000 mg of cortisone. 4000 mg of hydrocortisone, 1000 mg of prednisolone, or 800 mg of methylprednisolone.
People who have recently stopped taking a corticosteroid and are going through a period of stress may need small doses of a rapid-acting corticosteroid, such as hydrocortisone, to get them through this period. Call your doctor if you think you might be experiencing this kind of stress reaction.
Use corticosteroids with caution if you have had a recent heart attack or have, Colitis, heart failure, high blood pressure, blood-clotting tendencies, thrombophlebitis, osteoporosis, antibiotic-resistant infections, Cushing’s disease, myasthenia gravis, metastatic cancer, diabetes, underactive thyroid disease, cirrhosis of the liver, or seizure disorders.
corticosteroid psychosis (symptoms include euphoria or feeling “high,” delirium, sleeplessness, mood swings, personality changes, and severe depression) may develop in people taking dosages greater than 40 mg a day of prednisone. These symptoms may also develop with other corticosteroids taken in equivalent doses (see “Usual Dose” for relative equivalencies). Symptoms of corticosteroid psychosis usually develop within 15-30 days of beginning treatment. These symptoms may also be linked to other factors—women and those with a family history of psychosis are more at risk.
Corticosteroids can cause loss of calcium, which may result in bone fractures and aseptic necrosis of the femoral and humorai heads (a condition in which the large bones in the hip degenerate from loss of calcium).
Prednisone may aggravate emotional instability.
Corticosteroids do not cure multiple sclerosis (MS) or slow its progression, though they may speed recovery from attacks of the disease.
. Corticosteroid products often contain tartrazine dyes and sulfite preservatives. Many people are allergic to these chemicals.
Possible Side Effects
✓    Most common: headache, respiratory infections, acne, and bruising.
✓    Common: water retention (swollen ankles), back pain, heart failure, upset stomach (possibly leading to stomach or duodenal ulcer), potassium loss, dizziness, fatigue, insomnia, weight gain, increased appetite, nausea, stomach gas, abdominal pain, general pain, muscle weakness, loss of muscle mass, slowed healing of wounds, increased sweating, allergic rash, itching, convulsions, excess hair growth, and worsening of a pre-existing psychiatric condition.
✓    Less common: irregular menstruation; slowed growth in children, particularly after lengthy periods of corticosteroid treatment; adrenal or pituitary gland suppression; diabetes; drug sensitivity or allergic reactions; blood clots; moon face; feeling unwell; euphoria; mood swings; personality Changes; and severe depression.
♦    Rare: Rare side effects can appear in any part of the body. Contact your doctor if you experience any side effect not listed above.
Drug Interactions
•    Tell your doctor if you are taking any oral anticoagulant (blood-thinning) drug. If you begin taking a corticosteroid, your anticoagulant dosage may have to be adjusted.
•    Combining a corticosteroid and a diuretic such as hydrochlorothiazide may cause loss of blood potassium. Low blood potassium may increase the side effects of digitalis drugs.
•    Contraceptive drugs, estrogen, erythromycin, azithromycin, clarithromycin, and ketoconazole may increase the risk of corticosteroid side effects.
•    Barbiturates, aminoglutethimide, phenytoin and other hydantoin anticonvulsants, rifampin, ephedrine, colestipol, and cholestyramine may reduce the effectiveness of corticosteroids.
•    Corticosteroids may decrease the effects of aspirin and other salicylates, growth hormones, and isoniazid.
•    Combining a corticosteroid and a theophylline drug may require a dosage adjustment of either or both drugs.
•    Corticosteroids may interfere with laboratory tests. Tell your doctor if you are taking any of these drugs so that tests are properly analyzed.
•    Limit your intake of alcohol while on oral corticosteroids.
Food Interactions
Take corticosteroids with food or a small amount of antacid to avoid stomach upset. If stomach upset continues, notify your doctor. Grapefruit juice doubles the amount of some oral corticosteroids absorbed into the blood.
Usual Dose
Once-daily doses should be taken in the morning. Dosages vary greatly and depend upon the specific disease being treated. Dosages for infants and children should be individualized according to severity of disease and response to treatment.
Betamethasone: starting dosage-0.6-7.2 mg a day. Maintenance 1609age-0.6-7.2 mg a day.
Budesonide: 9 mg a day.
Cortisone: starting dosage-25-300 mg a day. Maintenance dosage-25-300 mg a day.
Dexamethasone: 0.75-9 mg a day. Daily dosage sometimes exceeds 9 mg. A temporary dosage increase may be necessary it you are experiencing emotional stress. In alternate-day therapy, twice the usual daily dose is taken every other day.
Hydrocortisone: 20-240 mg a day.
Methylprednisolone: starting dosage-4-48 mg or more a day. Maintenance dosage varies. A temporary dosage increase may be necessary if you are experiencing emotional stress. in alternate-day therapy, twice the usual daily dose is taken every other day.
Prednisone and Prednisoione: 5-60 mg a day. Daily dosage sometimes exceeds 60 mg. A temporary dosage increase may be necessary if you are experiencing emotional stress. In alternate-day therapy, twice the usual daily dose is taken every other day.
Equivalent doses: Using 5 mg of prednisone as the basis for comparison, equivalent doses of other corticosteroids are 0.6 mg-0.75 mg of betamethasone, 25 mg of cortisone, 0.75 mg of dexamethasone, 20 mg of hydrocortisone, 4 mg of methylprednisolone, and 5 mg of prednisolone.
Overdosage
Symptoms of overdose are anxiety, depression or stimulation, joint or muscle pain, blurred vision, stomach bleeding, increased blood sugar, high blood pressure, and water retention. The victim should be taken to a hospital emergency room immediately. ALWAYS bring the prescription bottle or container.
Special Information
Do not stop taking this medication without your doctor’s knowledge. Suddenly stopping any corticosteroid drug may have severe consequences; the dosage must be gradually reduced by your doctor.
G& your doctor if you develop unusual weight gain, black or tarry stools, swelling of the feet or legs, muscle weakness, vomiting of blood, menstrual irregularity, prolonged sore throat, fever, cold or infection, appetite loss, nausea and vomiting, diarrhea, weight loss, weakness, dizziness, or low blood sugar.
If you take several doses a day and forget a dose, take the dose you forgot as soon as possible. It it is almost time for your next dose, skip the one you forgot and double the next dose. If you take 1 dose a day and forget a dose, skip the dose you forgot and continue with your regular schedule. Do not take a double dose.
If you take a corticosteroid every other day and forget a dose, take it immediately if you remember it in the morning of your regularly scheduled day. If it is much later in the day, skip the dose you forgot and take it the following morning, then go back to your regular schedule. Do not take a double dose.
Special Populations
Pregnancy/Breast-feeding: Studies have shown that long-term corticosteroid therapy at high dosages may cause birth defects, as may chronic corticosteroid use during the first 3 months of pregnancy. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
Corticosteroids taken by mouth may pass into breast milk. Most nursing mothers who must take a corticosteroid should use infant formula, though low dosages of some of these drugs may be taken for short periods while breast-feeding. Consult your doctor.
Seniors: Seniors are more likely to develop high blood pressure while taking an oral corticosteroid. Older women are more susceptible to osteoporosis (a condition characterized by loss of bone mass due to depletion of minerals, especially calcium) associated with high dosages of oral corticosteriods. Lower dosages are just as effective in seniors and cause fewer side effects.

Type of Drug
Corticosteroids, Topical
(kor-tih-koe-STER-oids)
Brand NameS
CLASS 1–Super-potent topical products
Betamethasone Dipropionate gel, ointment 0.05% 91
Diprolene gel/ointment
C/obetasol Propionate 0.05% cream, foam, gel, lotion, shampoo, ointment 19
Clobex    Olux
Cormax    Olux E
Embeline    Temovate Embeline E
Difforasone Diacetate ointment 0.05% RE Olux-E Foam    Psorcon E
Fluocinonide cream 0.1 % 0 Vanos
Flurandrenolide tape 4 MCgICM2 Rfl Cordran Tape
Halobetasol Propionate cream/ ointment 0.05%
Ultravate
CLASS 2—High-potency topical products  Amcinonide ointment 0.1 % (0
Betamethasone Dipropionate cream 0.05%
Diprolene AF
Generic Ingredients: Betamethasone Dipropionate (0.064%) + Calcipotriene (0.005%) ointment
Taclonex
Desoximetasone Cream, ointment 0.25% and 0.05%; 0.05% gel DG
Topicort    Topicort LP
Generic 10gVEOUnt.- Diflorasone Diacetate cream, ointment 0.05% 91
Apexicon    Florone E
Apexicon E    Maxiflor
Florone    Psorcon
Fluocinonide cream, gel, ointment,
solution 0.05% 9
Lidex    Lidex E
Halcinonide cream, ointment, solution 0.1 % Halog
Mometasone Furoate ointment 0.1 % 91 Elocon
Triamcinolone Acetonide ointment 0.5% RE
CLASS 3—Upper mid-strength topical products  Amcinonide lotion 0.1 % 0
Betamethasone Dipropionate cream 0.05% (a
Diprolene    Teladar
Maxivate
Generic Ingredient.- Betamethasone Valerate ointment 0.1 %
Fluocinofone Acetonide [’61 Capex Shampoo
Fluticasone Propionate cream 0.05% 9 Cutivate
Triamcinolone Acetonide cream 0.5%
Delta-Tritex    Kenonel
Flutex    Triacet
Kenalog Cream    Triderm Kenalog-H
CLASS 4—Mid-strength topical products  Amcftnide cream 0.1% D3
Betamethasone Dipropionate lotion 0.05% and foam 0.12%®
Diprosone    Maxivate Lotion
Luxiq Foam
Desoximetasone cream 0.05% 19 Topicort
Fluocinolone Acetonide
Synalar Ointment 0.025%    Synalar-HP Cream 0.2%
Flurandrenolide ointment 0.05% Cordran
Fluticasone Propionate lotion 0.05% Cutivate
Hydrocortisone Valerate ointment 0.2% ED Westcort
Mometasone Furoate cream, lotion, solution 0.1
Elocon
Prednicarbate ointment 0.1 % 10 Dermatop E
Triamcinolone Acetonide 0.1 %
Aristocort A    Delta-Tritex Cream
Aristocort Cream and    Kenalog
Ointment    Triderm
CLASS 5—Lower mid-strength topical products  Betamethasone Valerate cream, lotion 0.1
Beta-Val    Dermabet
Betatrex    Valnac
Clocortolone Pivalate cream 0.1 % Cloderm
Desonide ointment 0.0511/0
Desonate    Tridesilon
UnOwen    Verdeso Foam Lokara
Fluocinolone Acetonide cream 0.025% 91 Synalar
Flurandrenolide cream, lotion M Cordran Lotion 0.05% Cordran SP 0.05% Cordran Ointment 0.25%
Fluticasone Propionate ointment 0.005% Cutivate
Hydrocortisone Butyrate Cream, ointment, solution 0.1 0
Locoid
Hydrocortisone Probutate 0.1% Pandel
Hydrocortisone Valerate cream 0.2% RE Westcort
Prednicarbate Cream 0.1 % RE Dermatop E
CLASS 6—Mild topical products
Alclometasone Dipropionate cream, ointment 0.05% 91
Aclovate
Desonide cream, lotion 0.05% DesOwen    Tridesilon Lokara
Fluocinolone Acetonide cream, shampoo, solution 0.01%
Derma-Smoothe/FS Oil    FS Shampoo
Flurosyn    Synalar
Flurandrenolide cream DG Cordran SP 0.025%
Generic Ingredient., Triamcinoione Acetonide cream 0.1 % MS10cort
Triamcinolone Acetonide cream 0.025% Flutex    Triacet
Kenalog
CLASS 7—Least potent topical products  Hydrocortisone A
1% HC    HydroSkin
Ala-Cort    HydroTex
Ala-Scalp    Hytone
Alcortin    Ivy Soothe
Analpram-HC    Maximum Strength Bactine
Anusol-HC    Maximum Strength Cortaid
Cetacort    Maximum Strength Cortaid
Cortaid Intensive Therapy    Faststick
Cortizone-5    Maximum Strength
Cortizone-10    KeriCort-1 0
Cortizone-10 Plus    Nutracort
Cortizone-10 Quickshot    Procort
Cortizone for Kids    Proctocream-HC
Delcort    Proctofoam-HC
Extra Strength CortaGel    Stie-cort
Hemril    Synacort
Hi-Cor 1.0    Tegrin HC
Hi-Cor 2.5    Texacort Hycort
Hydrocortisone Acetate cream, ointment 0.5% and 1%G
Cortef Feminine Itch    Lanacort
Corticaine    Maximum Strength Caldecort
Cortifoam    Micort-HC
Dricort    U-Cort Gynecort Female Creme
Prescribed For
Inflammation, itching, eczema, dermatitis, vitiligo (patchy loss of skin color), blistering skin diseases, lupus and other connective tissue diseases, psoriasis, and many other specialized skin problems; may also be used to Weal severe diaper rash.
General Information
Topical corticosteroids do not cure the underlying cause of skin problems, but they can relieve symptoms of rash, itching, or inflammation by interfering with the body mechanisms that produce them. You should never use a topical corticosteroid without your doctor’s knowledge because it could mask a symptom important in diagnosing your condition. Also, improper use of a topical corticosteroid could lead to unwanted and sometimes permanent side effects. In general, ointment forms of topical steroids are more potent and usually more effective than cream or lotion forms. Ointments are also less likely to cause allergic reactions because they contain fewer inactive ingredients.
Generic products in this group can vary in potency and produce different results from their brand-name counterparts, even though they contain the identical quantity of active ingredient. Topical steroids are rated from 1 (most potent) to 7 (least potent). Generally, products within a potency class are interchangeable. Ask your doctor or pharmacist which products are interchangeable. The lowest potency products are available without a prescription. Ointments tend to be more potent than creams and solutions and different product concentrations affect their classification.
Super-potent topical corticosteroids (class 1) should not be used on the face, neck, under the arms, or in the groin area. These products are generally reserved for situations in which less potent products have not worked. They should be used with caution, and should only be applied to the areas that are affected with the rash. Using a product in this category for longer than 2 weeks at a time increases the risk of permanent skin damage.
High-potency topical corticosteroids (classes 2 and 3) are best for the trunk, arms, and legs, but should not be used on the face, neck, under the arms, or in the groin area. Using a product in this category for longer than 2 weeks at a time increases the risk of permanent skin damage.
Intermediate-potency topical corticosteroids (classes 4 and 5) can be used in children for up to 1-2 weeks at a time. This type of medication is best for the trunk and extremities. It is safer for use on thin skin, and less effective on thicker skin.
Low-potency topical corticosteroids (classes 6 and 7) can be used on any part of the body, and can be used in children. They are the best choice for the face, uadera~m area, groin, neck, and i ftl Occluded areas such as skin folds.
Cautions and Warnings
Do not use a topical corticosteroid if you are allergic or sensitive to corticosteroids or to any ingredients of the aerosol, cream, gel, lotion, ointment, or solution. Do not use a topical corticosteroid as the sole treatment for bacterial skin infections such as impetigo, viral skin diseases such as herpes, fungal skin infections such as athlete’s foot, or known tuberculosis of the skin. These drugs should not be used in the ear if the eardrum is perforated. Do not use a topical corticosteroid on ulcerated skin, or to treat acne.
Skin problems can become less responsive with time if a product is applied continuously over a long period of time. This can re-
sult in a flare-up of the problem when the medication is stopped.
Using a less potent product may avoid this problem.
Rectal corticosteroid products should not be used if you have any serious bowel condition, including bowel perforation, obstruction, abscess, and systemic fungal infection.
The rectal foam is not expelled after it has been applied and may result in higher drug blood levels than those associated with rectal enema products. The risk of systemic (whole-body) side effects is greater when more of the drug enters the blood. If there is no improvement after 2 or 3 weeks of using a rectal corticosteroid, contact your doctor.
Using a topical corticosteroid around the eyes for prolonged periods may cause cataracts, glaucoma and/or permanent thinning and fragility of skin around the eyes where the corticosteroid is being applied.
Children may be more susceptible to serious systemic side effects from topical corticosteroids, including growth retardation, Cushing’s syndrome, and suppression of natural corticosteroid production, requiring a tapering of the medication, especially if the medications are applied to large areas over long periods. Super-potent topical corticosteroids are not recommended for children.
Possible Side Effects
♦ Most common: burning; itching; irritation; “steroid” acne; skin thinning, tightening, or discoloration; stretch marks; dry cracked skin; bruising; and secondary i0ection. These effects are more likely when the treated area is covered Stith al) occlusive bandage (one that prevents contact with water and air). Side effects are more likely with extended use of high-potency topical corticosteroid products and when the treated area is covered with a bandage that completely prevents skin contact with water and air.
Possible Side Effects (continued)
V Significant amounts of corticosteroids may be absorbed into the bloodstream if large amounts are used for long periods. This can result in systemic effects and may cause serious problems, particularly in people with liver disease. Systemic side effects include lightheadedness, hives, growth suppression, and adrenal suppression.
Drug Interactions None known.
Usual Dose
Adult
Cream, Ointment, Solution, Foam, and Aerosol: Apply a thin film to the skin 2-3 times a day. High- and super-potent products should be applied no more than twice a day, and should be used for short-term treatment, usually 2-3 weeks at a time. Some may have to be applied only once a day.
Rectal Enema: 100 mg nightly for 21 days.
Rectal Foam: 1 applicator’s worth, 1-2 times a day for 2-3 weeks.
Child: Dosages for children should be limited to the lowest possible potency.
Overdosage
Serious adverse effects are unlikely after accidental ingestion. Excessive use of large amounts of topical corticosteroids may cause overdose symptoms and require gradual discontinuation of the drug. Call your local poison control center or a hospital emergency room for more information. ALWAYS bring the prescription bottle or container.
Special Information
To prevent secondary infection, clean the skin before applying the drug. Apply a very thin film and rub in gently—effectiveness depends m contact area, not the thickness of the layer applied.
Do not wash, rub, or put clothing on the area until the medication has dried.
Topical corticosteroids have an additive effect: with continuous use, 1 or 2 applications a day may be as effective as 3 or more. Once the drug begins to take effect, your doctor may recommend reducing the dose to the minimum level needed to control the
condition.
Flurandrenolide tape comes with specific directions for use-, fol-
low them carefully.
If your doctor instructs you to apply plastic wrap or any other occlusive dressing, follow directions carefully. These dressings can increase the penetration of the drug into your skin by as much as 10 times, which may be a crucial element in the medication’s effectiveness. Occlusive dressings should not be used with any of the super-potent topical products.
If you are using one of these products for diaper rash, do not use tight-fitting diapers or plastic pants, which can cause too much drug to be absorbed into the blood.
Your doctor may prescribe a specific form of the product with good reason. Do not change forms without your doctor’s knowledge: a different form may not be as effective.
If you forget to administer a dose, do so as Soon as you remember. If it is almost time for your next dose, skip the one you forgot and continue with your regular schedule. Do not administer a double dose.
Special Populations
Pregnancy/Breast-feeding: Large amounts of corticosteroids applied to the skin for long periods of time may increase the risk of birth defects. When your doctor considers any of these drugs crucial, its potential benefits must be carefully weighed against its risks. Do not use any over-the-counter hydrocortisone product for more than a few days without your doctor’s knowledge.
Nursing mothers who must use a topical corticosteroid should consider using infant formula. If you apply a corticosteroid to the nipple area, be sure to completely clean the area prior to nursing. Nursing mothers should never use the highest potency corticosteroids (classes 1, 2 or 3) because of the risk of absorbing large amounts of drug into the system that could find its way into breast milk. Nursing mothers should discuss toqkoa1 corticosteroid use with their doctor befQ(e,applying any product.
Seniors: Seniors are more susceptible to high blood pressure and osteoporosis (a condition characterized by loss of bone mass due to depletion of minerals, especially calcium) associated with large dosages. These effects are unlikely with topical corticosteroids unless a high-potency medication is used over a large area for an extended period.

Brand Name
Cortisporin Otic
Generic Ingredients
Hydrocortisone + Neomycin Sulfate + Polymyxin B Sulfate RE
Other Brand Names
AK-Spore H.C. Otic    Octicair
Antibiotic    Otic-Care
Cortatrigen Ear Drops    Otocort
Drotic    Pediotic
Ear-Eze    UAD LazerSporin-C
Type of Drug
Antibiotic and corticosteroid combination.
Prescribed For
Superficial ear infection, ear inflammation or itching, and other outer ear problems.
General Information
Cortisporin Otic contains a corticosteroid to reduce inflammation and 2 antibiotics to treat local ear infections. This combination can be quite useful for local ear problems because of its dual method of action and its relatively broad applicability.
Cautions and Warnings
Do not use Cortisporin Otic if you are allergic or sensitive to any of its ingredients.
Cortisporin Otic is designed for use in the ear. It can be very damaging if placed into the eye.
Cortisporin should not be used if you have herpes simplex, vaccinia, or chickenpox. It also should not be used by patients sensitive to sulfite.
Cortisporin Otic should not be used iAyou have a perforated eardrum,
Possible Side Effects
V Local irritation, such as itching or burning, may occur as a drug sensitivity or allergic reaction.
Drug Interactions None known.
Usual Dose
3-4 drops in the affected ear 3-4 times a day. Treatment should not last beyond 10 days.
Overdosage
The amount of drug contained in each bottle is too small to cause serious problems. Call a hospital emergency room or your local poison control center for more information. If you seek treatment, ALWAYS bring the prescription bottle or container.
Special Information
Use only when prescribed by a physician. Overuse of this or similar products can result in the growth of new organisms, such as fungi. If new infections or problems appear, stop using the drug and contact your doctor.
Before administering drops, wash your hands, then hold the Closed bottle in your hand for a few minutes to warm it to body temperature. Shake well for 10 seconds. For best results, drops should not be self-administered, but given by another person. The person receiving the drops should lie on his or her side with the affected ear facing upward. Fill the dropper and instill the required number of drops directly in the ear canal.
If the drops are being given to an infant, hold the earlobe down and back to allow the drops to run in. If the drops are being given to an older child or adult, hold the earlobe up and back to allow them to run in. Do not put the dropper into the ear or allow it to touch any part of the ear or bottle. Keep the ear tilted for about 5 minutes after the drops have been put in or insert a soft cotton plug, whichever is recommended by your doctor.
If you forget to administer a dose of Cortisporin Otic, do so as soon as you remember. If it is almost time for your next dose, skip the dose you forgot and continue with your regular schedQ%e. Do not apply a double dose.
Special Populations
Pregnancy/Breast-feeding: There are no studies of Cortisporin Otic in pregnant women but it does contain a corticosteroid, which when used over long periods of time in other formulations may increase the risk of birth defects. This drug should only be used during pregnancy after carefully weighing it potential benefits against its risks. Nursing mothers who must take this drug should use in-Pant formula.
Seniors: Seniors may use this product without special restriction.

Brand Name
Cosopt
Generic Ingredients  Dorzolamide + Timolol
Type of Drug
Carbonic anhydrase inhibitor and beta blocker combination.
Prescribed For
Open-angle glaucoma and ocular hypertension.
General Information
Cosopt contains 2 glaucoma drugs that work in different ways. It is intended for people whose glaucoma does not respond to either drug used alone. Small amounts of dorzolamide and timololthe active ingredients in Cosopt–enter the bloodstream.
Cautions and Warnings
Do not use Cosopt if you are allergic or sensitive to any of its ingredients or cannot take sulfa drugs or beta blockers. Cosopt should not be used by people with bronchial asthma, severe chronic obstructive pulmonary disease, slow heart rate or heart block, heart failure, or who are in shock.
People with diabetes or an overactive thyroid should use Cosopt with caution since beta blockers can mask the signs of low blood sugar or hyperthyroidism.
Small amounts of both ingredients enter the bloodstream and can produce the same kinds of systemic (whole-body) reactions associated with larger dosages of either a sulfa drug or beta blocker. Stop using the drug at once and call your doctor if a serious reaction develops.
4lt?18b)ockers may have to be discontinued prior to major surgery because they can affect the heart’s ability to respond normally. Some people taking a beta blocker experience severe reductions in blood flow while undergoing general anesthesia.
Dorzolamide should not be used by people with kidney disease and has not been studied in people with liver disease.
People with a history of severe allergic reactions who take a beta blocker may be at increased risk of experiencing a reaction because the drug blocks part of the body’s natural allergic
response.
Timolol can worsen the muscle weakness that accompanies myasthenia gravis.
Possible Side Effects
♦    Most common: changes in sense of taste, especially bitterness or sourness; increased sensitivity to light; and a burning or stinging sensation in the eye.
♦    Common: eye redness, irritation, or itching, and blurred vision.
♦    Less common: abdominal pain, back pain, eyelid inflammation, bronchitis, cloudy vision, eye discharge or swelling, conjunctivitis (pinkeye), corneal erosion, corneal staining, lens cloudiness, cough, dizziness, dry eye, upset stomach, drug particles in the eye, eye pain, tearing, eyelid scaling, eyelid pain or discomfort, sensation of something in the eye, headache, high blood pressure, influenza, lens discoloration, nausea, sore throat, cataracts, sinus irritation, respiratory infection, urinary infection, visual problems, and retinal detachment.
•    Rare: slow heartbeat, heart block or failure, chest pain, stroke, depression, diarrhea, dry mouth, breathing difficulties, low blood pressure, stuffy nose, rash, tingling in the hands or feet, kidney stones, and vomiting. Contact your doctor if you experience any side effect not listed above.
See Dorzolamide, page 200, and Timolol, page 1129, for fur-
ther side effect information.
Drug Interactions
•    If you use more than 1 eyedrop medkc;a~mn, separate doses of these drugs tai z& Y@ast 10 minutes.
•    COSOpt can increase the effect of other carbonic anhydrase inhibitors.
•    Combining Cosopt with an oral beta blocker or another calcium antagonist may increase the risk of side effects, especially changes in heart rhythm and low blood pressure.
•    Do not combine Cosopt and another beta-blocking eyedrop.
•    Combining Cosopt and reserpine can lead to low blood pressure, slowing of heartbeat, and dizziness or fainting.
•    Combining Cosopt with digitalis and a calcium antagonist, or with quinidine, can slow heartbeat.
See Dorzolamide, page 200, and Timolol, page 1129, for further drug interactions.
Usual Dose
Adult: 1 drop in the affected eye twice a day. Child: not recommended.
Overdosage
Little is known about the effects of Cosopt overdose or accidental ingestion. Possible overdose symptoms include dizziness, headache, shortness of breath, slow heartbeat, breathing difficulties, heart attack, and nervous system effects. Call your local poison control center or a hospital emergency room for more information. If you seek treatment, ALWAYS bring the prescription bottle or container.
Special Information
Conjunctivitis (pinkeye) and eyelid reactions can occur due to an allergic reaction or as the result of local irritation. If you experience either of these problems, stop using the drug and call your doctor so that your condition can be evaluated.
To prevent infection, do not allow the eyedropper to touch your fingers, eyelids, or any surface. Wait at least 10 minutes before using any other eyedrops.
Cosopt contains benzalkonium chloride (a preservative), which may be absorbed by soft contact lenses. Remove your soft contact lenses before using the eyedrops; you may put them back in 15 minutes after a dose.
If you forget a dose of Cosopt, take it as soon as you remember. If it is almost time for your next dose, skip the forgotten dose and continue with your regular schedule.
Store Cosopt away from sunlight.
Special Populations
Pregnancy/Breast-feeding: The safety of using Cosopt is not known. When this drug is considered crucial by your doctor, its potential benefits must be carefully weighed against its risks.
It is not known if dorMlamidle passes into breast milk, though timolol does. Nursing mothers who must use Cosopt should use
infant formula.
Seniors: Seniors may use Cosopt without precaution.

Allergens and irritants at work
Some workplaces have very high concentrations of allergens in the air, especially if proper safety procedures are not being followed. Occupational allergies can begin with symptoms in the nose, such as sneezing, blockage or constant streaming (allergic rhinitis). You may also suffer with itchy or watery eyes (conjunctivitis), a cough, sweating and a feverish feeling. Alternatively, direct contact with the allergen can produce a skin rash (dermatitis) or itchiness and swelling (contact urticaria/nettle rash and angioedema).
If you work somewhere with an allergy risk (see pp. 133-4), be vigilant for such symptoms and see your doctor immediately. These symptoms can be the forerunners of occupational asthma, which is a serious and potentially irreversible problem. Some allergens, such as latex, can even produce anaphylactic shock (a life-threatening allergic collapse).
Skin-prick tests (see p. 91) can show if you have an allergy to a substance encountered at work.
Acting promptly gives you the best possible chance of recovery and is vital if you have occupational asthma. Only if exposure to the allergen stops promptly do you have a good chance of shaking off the asthma. See your doctor as soon as possible and ask for a referral to a chest specialist, so that a definite diagnosis can be made. This is essential if you are going to make a claim for compensation.
Far too many people with occupational asthma are just sent off with an inhaler when they first see their doctor. By delaying the moment when work is identified as the source of the problem, and the exposure to the allergen is stopped, drug treatment can turn occupational asthma into a disabling lifelong problem. Although drugs can be helpful in speeding your recovery once exposure to the allergen
Latex allergy
Sensitisation to latex usually occurs at work (see pp. 133-4), or as a result of having many surgical operations. But latex allergy sometimes occurs in allergy-prone people even though they don’t work in a high-risk job and haven’t had many operations. Some doctors think that if a child with severe allergies needs surgery, this should be done in latex-free conditions, even though the child has no allergy to latex, because of the risk that the operation will sensitise.
Latex can cause either contact dermatitis (see p. 55) or a Type I allergy, whose symptoms can include urticaria, asthma and anaphylaxis. Latex allergy often goes undiagnosed. Once sensitised, you may react to balloons, elastic bands, condoms and household gloves. Latex in the air,
due to powdered latex gloves being used, can be a hazard for someone who is highly sensitive, as can latex traces in food (see box on p. 175). Medical treatment may be problematic (see p. 98 and box on p. 249). Cross-reactions to certain foods can occur (see p. 15 and p. 51).
For those avoiding latex, there are non-latex gloves (see p. 57), and non-latex condoms. Immunotherapy (see pp. 164-9) may be useful in severe cases: it can reduce sensitivity and eliminate cross-reactions to foods.
Other hazards
This article (pp. 132-5) deals mainly with allergens at work, that is, substances which provoke classical allergies (Type I reactions). In addition, there are skin irritants and antigens in workplaces which can provoke contact dermatitis (see p. 56) or contact urticaria (see p.50).
Some of the most dangerous workplace substances are those that bring on asthma but are not allergens. These are usually called low-molecular-weight asthmagens. The most notorious of these are platinum salts, isocyanates (used in cement, in the manufacture of foam, plastics and varnishes, and for spray-painting cars, aeroplanes and boats), colophony (used as a solder in electronics), glutaraldehyde (used in hospitals for sterilisation procedures), and persulphate (used in hairdressing). Powerful respiratory equipment, supplying air from outside the area (see p. 135) is needed if you work with some of these substances, e.g. isocyanates for spray-painting cars.
has ended, they should not be seen as a way of allowing you to go on working with the offending allergen or asthmagen.
If it seems plausible that your allergies or your asthma are related to your work, your doctor should be able to give you a sickness certificate, so that you can have some time away from the workplace, to see if you recover. The medical service at your workplace may be better at diagnosing occupational asthma than your own doctor, but be cautious. In some workplaces they do operate as they should and offer genuinely confidential treatment. But there have also been cases of information being passed to the management, and workers with the early signs of occupational allergies and/or asthma being dismissed on a pretext, or made redundant, to avoid a possible compensation claim. Most occupational health services claim to be independent, but they actually have to earn the trust of the workforce. Before you make any move, ask your colleagues for their views, especially those who have worked there for many years.
Choosing a job
If you have any tendency to allergies, or come from an allergy-prone family, you should be very choosy about where you work. Try to avoid workplaces where there is heavy exposure to allergens, especially airborne allergens which can provoke asthma:
• Bakeries and flour mills, where the allergens concerned may be wheat proteins in the flour, or enzymes added to the flour mix. These allergies can take years to begin.
• Other food-processing works, particularly those dealing with tea, soyabeans, other beans (e.g. gram flour), shellfish and fish (especially if automated gutting machines are used without adequate ventilation). Food preparation and sandwich-making can cause contact urticaria, if there is prolonged contact with a particular foodstuff (e.g. tomatoes).
• Farms, docks and cotton mills – or any other workplace generating dust from plant products. On farms, it is the dust from grain and hay that is often responsible, although mould spores (see p. 121) can also be the culprit. Allergies to mites (found in hay, grain and flour) sometimes occur and eczema is the most common symptom – often called simply ‘grain itch’.
• Saw mills and joineries, because of the wood dust, especially that from hardwoods and from red cedar (Thuja plicata).
• Paper recycling plants, if there is a lot of paper dust in the air.
• Detergent and pharmaceutical factories handling enzymes – these are added to ‘biological’ washing powders and are potential allergens. The risks are less these days, as the enzymes are in granule form rather than powder.
• Factories processing natural products such as psyllium or ispaghula, which are used as laxatives. Anyone who has been sensitised should avoid taking medicines containing the offending substance in the future, because these can sometimes provoke a dangerous anaphylactic reaction.
• Hospitals, clinics and dental surgeries, mainly due to latex rubber, used in gloves and equipment. Although nursing staff and surgeons are most susceptible, other staff including hospital administrative workers can occasionally be affected. Fears about the spread of the HIV virus has led to a huge increase in the use of latex gloves in medicine and dentistry, and a consequent epidemic of latex allergy. The main problem is with powdered latex gloves, which release 15,000 times as much allergen into the air as unpowdered gloves. Unpowdered, low-allergen gloves greatly reduce the risk of latex allergy developing, and non-latex gloves are even better. There are moves to ban the import of powdered latex gloves into Britain. They are already being phased out in hospitals and other medical facilities, but progress is slow in some areas.
• Other workplaces where powdered latex gloves are used, including
Making the workplace safe for everyone
Note that these choices about employment are for the individual employees to make for their own protection - an employer cannot refuse to take anyone on because they have allergies or come from an atopic (allergy-prone) family.
The reasoning behind this is that the workplace should be safe for everyone, as far as possible. As many as one in three of the population may be susceptible to allergies, and it is clearly wrong to bar all such people from major industries. Current thinking, in most countries, is that the focus should be on getting allergens and asthmagens out of the air, not keeping the more vulnerable workers out of the workplace.
hairdressers, dental surgeries, pathology laboratories and police stations. Construction workers wearing rubber gloves are also at risk. Someone who has been sensitised by powdered latex gloves may then react to other items (see box on p.132). Those severely affected can have great problems in daily life and with medical treatment, so anyone with a strong tendency to allergy should strenuously avoid becoming sensitised.
• Factories making or using rubber items may also expose workers to the risk of latex allergy. Anything made by the ‘dipping method’ (e.g. balloons, condoms, elastic bands and gloves) is highly allergenic. Moulded rubber items, such as tyres, are much less of a problem. Neoprene and other synthetic rubber items are not allergenic.
• Chiropody and podiatry clinics, where there is a risk of allergic reactions to the fungus that causes athlete’s foot. It is inhaled on skin flakes from the patients’ feet.
• Laboratories and other workplaces where animals are kept. In the case of mice, rats and other rodents, the allergen is found in the animals’ urine, and becomes airborne as the urine dries. Insects and spiders (e.g, those reared for biological pest control), are also allergenic due to small airborne particles from their bodies. Those working closely with bees (either honeybees or bumblebees, now reared for pollinating glasshouse crops) are liable to be stung frequently, and this can lead to sting allergy (see pp. 60-61).
• Hairdressing salons, where many different items are used that are potentially allergenic, including latex gloves (see above), permanent-wave solutions and henna. The risks of contact dermatitis are also high (see p. 55).
• Greenhouses, where the enclosed conditions can lead to high levels of allergens from plants, moulds and insect pests. There may also be exposure to pesticide sprays or their residues, which can greatly aggravate any underlying tendency to allergies.
If you have ever suffered from atopic eczema, work situations that can bring on contact dermatitis should also be avoided (see p. 55).
Taking a risky job
If circumstances force you to take a job with an allergy risk, observe all the safety procedures that are in place, and where you have the option of turning on extractor fans, wearing protective gear, or simply opening doors and windows, always do so. If the safety procedures seem inadequate, talk to your trade union Safety Representative, or the local Health and Safety Executive which can run a check on safety procedures in your workplace. This will be presented to the employer as a routine check, so they need never know that a member of the workforce has contacted the HSE.
Whatever you do, if you are in a risky job, don’t smoke. At a salmon processing plant in Scotland, 40% of the smokers developed allergies (resulting in asthma) to the fish allergens in the spray from the fish-gutting machine. Non-smokers - who formed the overwhelming majority of the workers - were not affected at all. In United States cotton mills, smokers are affected by levels of cotton dust in the air that are legally defined as ’safe’, while nonsmokers remain unaffected.
Passive smoking at work is also an important issue. A recent US study showed that non-smokers were more likely to develop asthma if they worked alongside a smoker. Your employer has a duty to provide you with clean air. This includes ensuring that other employees do not impose their cigarette smoke on you.
Respiratory equipment
Where respiratory equipment is needed, your employer must provide this, and it must be the right equipment for the job. It should be inspected, tested, cleaned and repaired after each use, and filters should be replaced regularly. All this is your employer’s responsibility, but check that it is being done, and always look the mask over before you put it on.
Two different types of respiratory equipment are currently in use:
• Those that give you a supply of air from outside the work area, either from a compressed-air cylinder, or via an air-hose (airline) supplied with fresh air. In Britain these are called breathing apparatus.
• Those that use the surrounding air but filter it to remove allergens and asthmagens. In Britain these are called respirators. (In some countries this term describes any kind of respiratory equipment.) Ordinary respirators may pose problems for some asthmatics because they cannot breathe in strongly enough to draw sufficient air through the filter. Powered respirators can be the answer: they have a battery-powered unit to help with pulling in the air.
There are government regulations concerning the type of equipment required for each type of allergen and asthmagen. Large companies generally follow these regulations, but small businesses, such as local sawmills, joineries and car-repainting workshops, may not even know about them.
Any respiratory equipment that has a face mask must form a tight seal with your face. Facial hair will prevent this, and so will stubble, so shave carefully. Faces vary enormously in shape, and if your face mask does not fit, ask for a different type of mask or a different type of respiratory equipment. Persist until you get one that’s right for you.
Carry out a ‘fit check’ each and every time you wear the mask. For example, with respirators, you can check the fit by covering the air intake completely with your hand and breathing in sharply: if the mask fits properly, it should collapse onto your face, and remain stuck to your face for several seconds. Look at the manufacturer’s instruction booklet as there may be a specific fit check recommended for the equipment you are using.
If there is any difficulty in breathing through the respiratory equipment, the replaceable filter cartridge or the equipment itself should be replaced. You should also take action immediately if you can smell the substance being handled – but never rely on this as a danger sign, because an extremely small amount, way beyond the detection capacity of the human nose, may be very damaging indeed to your health.
Keep your mask on throughout the work period. If you find this impossible, talk to your employer or
line manager about getting a different kind of respiratory equipment – a powered device, for example, that assists the inflow of air.
No form of respiratory equipment provides complete protection against allergens and asthmagens: there is always the chance of some small amount getting through. This is why respiratory equipment should not be used by those who have already developed occupational asthma but want to stay in their job.
Those who really cannot change jobs (e.g, farmers) are sometimes able to use a powered respirator helmet, which allows them to go on working despite the allergen. But this is not an ideal solution from a purely health point of view. Farmers can also improve matters, where moulds are the source of allergens, by keeping all harvested crops dry and thoroughly ventilated.
A lasting problem
As long as you catch the problem early, and are no longer anywhere near the allergen, your symptoms should disappear completely, but remember that you may still be highly sensitive to the allergen, even years afterwards. For a year or two at least, avoid contact with it again, even in tiny amounts. If someone else in your family works at the same place, they may bring home traces of the allergen on their clothes and hair: ask them to leave their workclothes outside the house and shower on arriving home.
With occupational allergies to airborne food particles, it is possible that the affected individual will later react to the same food when eaten. Experiment very cautiously, especially if the allergen is fish or shellfish.
The allergy may persist long after the job has ended. In one case, doctors found that a woman who had developed ‘baker’s asthma’, while working briefly in a bakery when young, was still allergic to the enzyme additive in bread 20 years later. She suffered an asthma attack whenever she ate bread.

If you or your child are allergic to your pet, you should really find it another home. But a survey in the United States showed that more than a third of people with cat allergy still keep their cat - so there is detailed advice below for those who want to keep the pet, as well as those who decide to part company.
Often people with severe allergies find that, although they miss their pet badly at first, the vast improvement in their symptoms makes that difficult decision seem like a good one in the long run. Finding a home for an adult pet is often difficult, as most people want kittens or puppies, but try advertising locally, and explaining in your ad exactly why the pet needs a new home. Family and friends may be happy to help by offering your pet a home. Ask around among your older neighbours too – they may value having a mature pet that is calmer and already house-trained.
Cats
You can’t see cat allergen – many people wrongly assume that it is cat fur that is allergenic, or flakes of skin. The main allergen is a protein found in the sweat and saliva of the cat, which wafts about in the air in microscopic specks. These lightweight allergen particles are carried throughout the house.
So small are these particles that they remain airborne for six hours or more, however still the air. If they do finally settle, they are easily made airborne again by the least little breeze. Simply walking around a room is enough to disturb them.
Parting with the cat
After your cat has gone, there will be allergens everywhere – on and in the armchairs, sofas and cushions, on shelves and lampshades, in the carpets and even stuck to the walls and curtains. They will also be inside the mattress if the cat once slept on the bed, and will shoot out every time you lie down.
Once the cat has gone, air the house very thoroughly to shift all the allergen that is just hanging in the air. Wait a couple of
weeks, and see how much your symptoms improve, before going further. If you still have troublesome symptoms that are worse at home, then you need to:
• Buy a high-suction vacuum cleaner that retains allergen particles (these are marketed for dust mites – make sure it is a good one) so that you can vacuum your furnishings without redistributing the allergen everywhere.
• Wash anything that can be washed: duvets, sheets, curtains, loose covers, cushions and their covers, duvet covers, pillow cases, bedspreads etc. Cat allergen is not affected by heat, so a cool wash is as good as a hot one – but you must wash all the allergen away, so run the rinse cycle twice. No one knows if dry-cleaning removes cat allergen.
• If the cat ever slept on your bed, then consider buying new pillows and duvet. Covers designed for dust-mite avoidance (see p. 115) are an alternative option. They will keep some of the cat allergen from escaping into the air, but not the very smallest particles.
• The seat cushions of sofas and armchairs can be sprayed with tannic acid or a polysaccharide (see box on p. 116) to deactivate the allergens. Vacuum clean very thoroughly first to remove as much allergen as possible, then spray repeatedly for a few weeks or months.
A clean getaway
The allergic individual should go out while this work is done, and stay out for at least six hours afterwards (see p. 109).
The size of the allergen particles
Cat allergen is the tiniest allergen - most of the particles are less than 2.5 microns, and the smallest may be only 0.05 microns. (A micron is a thousandth of a millimetre.) You would need a really good dust mask or HEPA air filter (see pp. 108-9) for these particles. It probably won’t remove the very smallest particles, but will certainly reduce the allergen load.
Even after the cat has gone, and you have cleaned up meticulously, you may still sometimes have symptoms. Unfortunately, cat allergen is carried about on the clothes of cat-owners and gets into schools, cinemas, buses, banks and even the padded seats in hospital waiting rooms. However, only the most highly sensitised people are affected by these low levels of allergen.
Keeping the cat
Bear in mind that keeping the pet will result in significant continued exposure however hard you try with the methods described.
• Improve the ventilation in your house as this will reduce the amount of allergen in the air. If your house is tightly sealed against draughts at the moment, this will actually make a huge difference. Air the house regularly. Always keep a window slightly open whenever the cat and/or the allergic person is indoors. You could use a HEPA filter to clean the air, instead. These work fairly well for cat allergens because these are very small lightweight particles which easily become airborne, so there is quite a lot of allergen in the air most of the time. Of course, an air filter cannot do anything to protect you from a cat sitting on your lap (though advertisements have sometimes implied that they can!).
• Put the cat outdoors when it begins washing itself, as this generates a lot of airborne allergen. Provide the cat with a shelter outside where it can sleep and wash, to reduce the amount of allergen in the house. Make it as warm and comfortable as possible, feed the cat there, and provide a little catnip to make it more attractive.
• If your cat is still allowed indoors, remove all soft furnishings and fitted carpets. Buy leather- or vinyl-covered armchairs which can be wiped clean of cat allergen.
• Keep the cat out of the bedroom entirely. If it has been in the habit of sleeping there, wash all the bedding and buy new pillows. The mattress and duvet should be replaced or covered with anti-mite covers (see p. 124).
• If you have an un-neutered tom, consider having him neutered: the amount of allergen produced declines when male cats are neutered.
The following measures are sometimes recommended, but in fact they don’t work:
• treating the cat with acepromazine, an animal tranquilliser
• using a spray called Allerpet-C, which, so it is claimed, reduces the amount of allergen released. Scientific trials by a research group in Detroit have shown that it does not work.
• giving the cat a shower - i.e. drenching it in water. After a cat has had such a shower, the washing water contains a lot of cat allergen, so everyone assumed that this meant less cat allergen in the air. New research shows that the amount of allergen in the air around a cat after showering is no less than before. However, actually immersing the cat for three minutes followed by rinsing in clean warm water does reduce the allergen level in the air considerably. Unfortunately, the cat probably renews its stocks of allergen very fast, as a washed dog does (see below), so you need to repeat the wash at least once a week to reduce the allergen level in the air.
Dogs
Most of the advice given above, for cats, applies to dogs too because their allergens are also small and lightweight. Dogs produce less allergen than cats, and it seems to be less potent. However, you would still need to clean up thoroughly after the dog has gone, assuming you decide to find it another home.
If you decide to keep your dog, HEPA filters can be very useful, although you need also to take other measures, such as excluding the dog from bedrooms and keeping it outside for more (or most) of the time. Washing dogs thoroughly in a bath, using dog shampoo, reduces the amount of allergen in the air, but it builds up again to its former level within three days. You would need to wash the dog twice a week to achieve a useful reduction in allergen levels.
Other pets and domestic animals
Horses produce very powerful allergens, and those with allergies to horses are often so sensitive that even clothing that has been worn while riding and then brought indoors can elicit symptoms. Old furniture or mattresses stuffed with horsehair can sometimes cause problems too.
In the case of small mammals, such as mice and guinea pigs, it is usually the urine that causes allergic reactions. Proteins in the urine become airborne, and are carried around the house. You may be able to keep the pet if it is in a well-ventilated utility room or caged outside.
With snakes, lizards and other reptiles the allergens are found in tiny skin particles that float in the air. The same is true of stick insects and other insect pets.

Pollen

Do you ever wake up in the middle of the night with an attack of hayfever or pollen asthma? And do you ever wonder why this should happen? The explanation is that warm air, rising up from ground level on a summer’s day, takes pollen with it high into the Earth’s atmosphere. When the air cools down after sunset, this pollen slowly descends again — an invisible ‘pollen shower’.
This pollen shower falls quite quickly in the countryside, reaching ground level between 8 p.m. and 10 p.m., but hot city pavements and buildings keep upward air currents going, and pollen stays aloft for longer. Most pollen lands on the city between about midnight and 2 a.m. That’s why you wake up sneezing or wheezing – especially if you sleep with the windows open.
Understanding facts like these about pollen can help you to reduce exposure substantially. Pollen is by far the most difficult allergen to avoid, but don’t believe the defeatists who tell you ‘You can’t do anything about pollen.’
Pollen counts and forecasts
Pollen counts are based on the amounts of pollen collected at specific sites earlier in the day, or on the previous day.
Forecasts for the coming day are really just informed guesswork, based on the present pollen count, the time of year, the temperature and rainfall over the last few days, and the weather forecast for the next day. At best, pollen forecasts are only as good as the weather forecast.
Forecasts of pollen can be useful in deciding when to start taking antihistamines for hayfever or when to Increase your asthma preventer drugs (steroid or cromoglycate inhalers). The start of the grass-pollen season is now predicted quite accurately.
Avoiding pollen outdoors
One thing that really can help here is an air-conditioned car. In an ordinary car, closing the windows (and perhaps fitting a filter to the air intake) helps a lot, but the heat is terrible.
The size of the allergen particles
The pollen grains that cause allergies are between 10 and 40 microns in size, with the majority between 20 and 35 microns. An ordinary dust mask takes out particles larger than 5 microns, so it will be adequate for most pollens. However, a few plants — including rye grass — produce tiny allergenic fragments, some no bigger than half a micron. These are about the same size as cat allergen and will therefore need much better masks. For these fragments, it is worth using a HEPA air filter, and getting a high-quality vacuum cleaner.
A cycle mask, or special nose filters sold for hayfever, will keep out pollen at peak pollen times. Just wearing a scarf over the mouth and nose will also give some protection. Another option is to smear a little Vaseline just inside each nostril and breathe through your nose only. Much of the pollen coming into your nose will stick to the Vaseline. If you ’suffer symptoms in the eyes, sun- glasses will keep some pollen out. Even better are wrap-around shades, or safety goggles with side panels sold in DIY stores.
Pollen release occurs at different times of day for different plants. Grasses release pollen from about 7.30 a.m, onwards, but if the ground is damp the release will be delayed until the moisture has evaporated. Unfortunately, a few grass species wait until the afternoon, so there will be some pollen entering the air all day. If you get up at 6 a.m. for a walk or run, you can be safely home by 7.30 a.m. Alternatively, go out In the early evening, after grasses have finished releasing pollen, and before the ‘pollen shower’.
Birch is an afternoon pollen: release peaks between noon and 6 p.m. Unfortunately, there is no information at present for other types of plants.
All types of plants favour warm sunny days for releasing pollen, and they all avoid rainy weather. On cloudy days there is a build-up of pollen in the flowers, so a massive release of pollen occurs on the next day of good weather.
Avoiding pollen indoors
Pollen grains have one huge point in their favour: compared to other allergenic particles, they are big and heavy. This means that they settle more quickly from the air. In a room with 3m- (1 Oft-) high ceilings, all the pollen will settle within four minutes, as long as the air is completely still. In other words, if you close all the doors and windows, block off any draughts, and sit fairly still, within four minutes you will be breathing pollen-free air.
This does not mean that all your symptoms will instantly vanish, because the ‘Late Phase Reaction’ (see p. 13) can go on for up to 24 hours. But you should feel better and, by not starting a new cycle of allergic reaction, you are improving the prospects for the next day. Escaping from pollen for a few hours every day should produce a general improvement in the long run, with your nose and airways becoming less inflamed.
The bad news is that some plants produce allergenic fragments much smaller than the pollen grains themselves. Various grasses do this, as do birch trees and certain plants not generally found in Britain, such as ragweed. These tiny particles take much longer – up to six hours – to settle from the air.
Some plants even produce ‘volatiles’ – airborne chemicals that provoke symptoms. Birch trees release volatiles from their buds in early spring, weeks before the pollen itself is released, and they affect a great many people, including some who are not allergic to birch pollen. Volatiles can only be removed by masks or air filters if they contain an activated carbon filter (see p. 109).
The notorious effects of oil-seed rape on the nose are also due to volatiles, not pollen. These volatiles are simply irritants and there is no allergic reaction.
To cut down on the amount of pollen you inhale at home:
• Dry all your laundry indoors during the pollen season, to stop it collecting pollen.
• Pets bring in pollen on their fur, so keep them outdoors during the pollen season, and avoid stroking them or getting too close. Brushing them thoroughly before they come in is another option, but the allergic individual should not do this.
• Close the windows when your offending pollen is being released, and during the evening ‘pollen shower’ (see p. 126).
• Change your clothes when you arrive home, since they will be coated with pollen, and wash or rinse your hair. Keep some clothes for indoor use only.
• Aim for still air (no draughts, no fans and no vigorous movement) in the rooms where the allergic individual studies, sits or sleeps. Air currents stir up pollen from the floor and furnishings. (No draughts means poor ventilation, of course, which is acceptable during the pollen season – but ventilate again afterwards, to discourage moulds and dust mites.)
• If tranquil air is an impossibility, consider getting a high quality air cleaner, or air conditioning. Alternatively, wet-dust and vacuum every day (using a vacuum cleaner that keeps allergen particles in – see pp. 116-17) to reduce the amount of pollen residue. Those who are very sensitive may need to do this as well as having an air cleaner.
• Cover your armchair and bed with a dust sheet during the day. In the evening, fold this up very gently and wash it. This removes the layer of pollen that accumulates on furniture during the day, before it is disturbed and inhaled. If you are studying, cover your desk and books when not working.
Places to go, places to avoid
• For the grass-sensitive, mown grass is usually fine (it won’t flower) although some people react to skin contact with grass (see p. 43). Unmown grass does flower, and will cause symptoms. Wheat, barley and oats, although they are grasses, release little pollen and rarely cause problems. Rye and sugarcane do release pollen, and may affect some people, but maize (corn) has heavy pollen that does not travel far, so it rarely causes much trouble.
• The levels of most pollens do not differ much between town and country. In fact, high up in a tower-block may be one of the worst places, because of pollen rising on warm air.
• The seaside is often pollen-free thanks to onshore breezes. Mountain peaks and ridges are also good, but deep mountain valleys can be pollen traps.
Roses are not the problem
The pollens that cause allergic reactions almost all come from plants with inconspicuous greenish flowers. These plants are pollinated by the wind, which is why there is so much of their pollen wafting about in the air. Colourful and scented flowers are pollinated by insects and have big sticky pollen grains that don’t float about and rarely cause allergies. However, strong scents can irritate the nose of those who already have hayfever, and make their symptoms worse.

Many countries have special schools for children with severe asthma and other allergies. Italian children are sent to one in the Italian Alps, where there is no trace of pollen, house-dust mite, or animal allergens. After nine months these children are a great deal healthier and more active - all their lung function tests are vastly improved. Blood tests show that they are actually less allergic to common allergens than before.
You may not be able to do quite this well at home, but all allergens and irritants can be avoided to some extent. Even if you can’t eliminate them completely, you can certainly reduce your exposure.
Before you start, it is important to be clear about exactly what affects you, otherwise you will be wasting a lot of effort. For example, people who are allergic to dust mite often think that a dusty house will necessarily be worse for them than an apparently clean house, but this is not so (see p. 115). Or they may say ‘Oh, I got asthma on holiday, because the roads were so dusty and I’m allergic to dust,’ forgetting that only house dust contains dust mites. The road dust may have acted as an irritant, and helped to spark the asthma attacks, or it may have contained pollen or mould spores - but it does not contain dust mites or their allergens. Blaming the wrong thing for the asthma attack means that the real culprit is not identified.
If you are not absolutely sure what causes your allergies, skin-prick tests (see p. 91) can identify the allergen. These are especially recommended if your reactions to the presumed allergen are inconsistent, or you don’t respond to the anti-allergen programmes described here. For example, a few people who react to house dust are not allergic to dust mites, but to something else in the dust such as wool fibres or mould spores, or particles from cockroaches, house
flies, carpet beetles or a long-departed cat. Even pollen that has accumulated in house dust can provoke allergic reactions - if you are not an over-keen duster, it can still be there long after the pollen season.
If you have hayfever, knowing which pollens cause your symptoms (and learning to recognise the plants concerned) is useful. You will probably need skin-prick tests to be sure. ‘Hayfever’ can even be a seasonal mould allergy in some people (see p. 27).
Tackling allergens is now big business. There are a lot of people out there competing for your money and false claims are common, especially for anti-mite products. Only a few manufacturers are deliberately misleading, and most false claims probably stem from ignorance or wishful thinking, but be very sure you know the facts about your allergen before you buy.
Air cleaners are a good example. A really good quality air cleaner (which uses a HEPA filter - a High Efficiency Particulate Air filter) is an expensive purchase and, as the advertising tells you, it takes out very small particles with staggering efficiency. But this is entirely irrelevant if the source of those particles is no distance at all from your nose - your mite-infested pillow, for example, or the cat on your lap.
Something else that advertisements for air cleaners rarely mention is that unless you reduce allergen production - tackling mould growth in the house, for example, or keeping the dog outside - the filter can’t help much. In short, air cleaners do have their uses for some allergens, but they can’t work miracles.
The products mentioned here, if not available in your locality, can be bought mail-order from specialist suppliers of anti-allergy products (see p. 255). Note that some offer both very good products and distinctly doubtful products, so judge each item on its individual merits. Ask to see scientific evidence that it works.
Don’t be taken in by vague statements such as anti-allergenic’ - get the facts. This label is often used on pillows with synthetic filling, for example, and people assume that it refers to dust-mite allergy, whereas it simply means that the pillow does not contain feathers. But unless you are allergic to feathers, there is no reason to avoid feather pillows. (In fact, if not covered with mite-proof covers, synthetic pillows collect more dust-mites than feather pillows, because the fabric used for the cover is less tightly woven and the mites and skin particles get in more easily.)
Bad advice is also a hazard. Some of it just wastes your time and effort, but some could actually increase your exposure to the allergen. Advice to vacuum floors daily, or to vacuum beds, is commonplace but this achieves little and it means breathing much more allergen unless you have the right kind of vacuum cleaner. One health magazine even advised its readers with dust-mite allergy to ‘air mattresses by regularly turning them’. This will not affect mite numbers at all, but it will shoot massive amounts of mite allergen out of the mattress and into the nose and lungs.
Ridding your house of allergens and irritants is, in itself, a hazardous procedure because more of the offending substances will be released into the air during the work. If you take up carpets or remove mattresses, dust-mite allergens and mould spores will be churned up in their millions. Just bundling up a duvet will produce invisible clouds of dust mite allergen - and cat allergen, if your pet once slept on the bed.
Ideally, the allergic individual should not do the work, nor be in the house until it is 100% complete and the house has been very thoroughly aired. This is particularly important for those with chronic sinusitis and mould growth in the house, because of the risk of fungal infections in the sinuses (see p. 32).
If you are an allergy sufferer and have absolutely no choice but to do the work yourself, or to be present, then you should get a good quality dust mask and wear it throughout - only take it off when you go outdoors. Those with atopic eczema and sensitivity to airborne allergens should cover their skin carefully -with clothing, not barrier cream.
An ordinary hardware-shop dust mask is not adequate for most allergens - it only takes out really big particles and lets through all the common airborne allergens except pollen. You need a more serious sort of mask, designed for workplace use and conforming to official standards. Before buying one, ask what is the smallest size of particle that it filters out (at 90% efficiency, or better). Compare this with the particle size of your allergen (given in the articles that follow).
You must be able to breathe well through the mask when physically active, and it must fit tightly against your face, forming a seal at all edges. Beards and moustaches tend to prevent this - as does stubble.
Masks that combine an activated carbon filter with a dust filter will take out gases and chemical vapours as well as particles. Cycle shops now sell such masks -or try an industrial supplier. Such a mask can be useful if you are affected by traffic exhaust or industrial pollution as well as an allergen, for example, or if you are exposed temporarily to wet paint or other fumes at home. Activated carbon masks should also filter out the irritant substances from oil-seed rape plants.
Some people who try the anti-allergen programmes feel much better quite fast. But generally these are long-term strategies - you may not reap any benefits for a few weeks, and the improvement may be small at first. Sometimes it takes several months for the full effects to be felt, so be persistent.

A blocked or runny nose in Allergy
THAT LASTS ALL YEAR
`Everyone has heard of hayfever, but it’s news to most people that you can have this sort of problem all year round,’ complains Elizabeth. ‘Before we got the treatment sorted out, Benny was “the kid with the constant cold”, and I did notice other mothers looking less than enchanted at the prospect of his coming over to play.’
Benny suffers from allergic reactions to house-dust mites and cats which cause hayfever-style symptoms (26) all year round. This condition doesn’t even have a common name – the medical one is perennial allergic rhinitis – yet it is one of the most common allergic diseases.
Any airborne allergen that is found in the air all year round can cause perennial allergic rhinitis:
• House-dust mite is the number one suspect in most parts of the world. Particles from other insects, such as midges and mosquitoes outdoors, and cockroaches, house flies, bloodworms (used for fish food) or carpet beetles indoors, can also cause nasal allergies.
• Mould spores can be the problem: they are found both indoors and out.
• In some regions, certain types of pollen are airborne all year round (27).
• All pets other than fish produce allergenic particles (even snakes).
• Allergens encountered at work (133) can also produce symptoms in the nose. This is a warning sign gn you should not ignore – it often means that occupational asthma is on its way (132).
Occasionally, the offending substance is being eaten not inhaled. This is less common, so you should investigate inhaled allergens first, before trying an elimination diet (29).
Skin-prick tests (91) will help to identify any airborne allergens that are responsible, but where food is the culprit, skin-prick tests are often negative (69)
Triad and NARES
Diagnosis of perennial allergic rhinitis is complicated by the fact that there are two other conditions – called triad and NARES – which produce similar symptoms and involve the immune system but are not, strictly speaking, allergies.
Triad is so called because it involves three distinct symptoms:
• perennial rhinitis
• polyps in the nose – little fleshy growths that can kill your sense of smell
• asthma.
People with triad tend to collect all three symptoms gradually, in no fixed order, over a period of years or even decades. Many are sensitive to aspirin and related drugs, and almost everyone with triad develops this sensitivity eventually.
Aspirin sensitivity can come on very suddenly and produces a reaction akin to anaphylaxis (101). This can be fatal, so it is probably best to avoid all aspirin-like drugs if you have triad, even though you have not reacted to aspirin in the past Aspirin-like drugs are found in painkillers, arthritis drugs and cold remedies – check with a pharmacist before you buy (151).
If you have asthma, think twice about operations on the nose to remove polyps – they can make the asthma much worse.
The initial letters of Non-Allergic Rhinitis with Eosinophilia have been stretched a bit to get NARES. (This is a medical joke –the Latin word Hares means nostrils.) The problem is caused by eosinophils (19), which flock into the nose and cause severe inflammation. Some people with NARES go on to develop triad.
Collateral damage
Having the nose swamped with mucus can lead to knock-on problems in the ears, sinuses and airways.
If the tube that leads from the ear to the nose (the Eustachian tube) becomes blocked, then fluid cannot drain away from the middle ear. This is called secretory otitis media, or glue ear - it dulls the hearing and causes an unpleasant ‘popping’ sensation. The ears may also feel blocked and itchy, but if children have had this problem since they were tiny they may not complain because they assume that’s just the way ears are supposed to feel. Deafness is often the first sign anyone notices.
Sinusitis is another possible complication, because fluid from the sinuses should also drain into the nasal cavity. With the ouflow blocked, mucus builds up in the sinuses and can become infected by bacteria (30).
Post-nasal drip can also occur with perennial allergic rhinitis. The over-abundant mucus runs down the back of the nose, into the throat and then the airways. This produces a persistent phlegmy cough, which may occasionally be mistaken for asthma.
When the rhinitis is treated effectively, all these problems should sort themselves out, although additional treatment is usually necessary in the case of persistent sinusitis (33).
Treatment
Where an allergen such as house-dust mite or mould spores has been identified as the source of the problem, eradicating it from your house (see Chapter 4) will make a huge difference, and may avoid the need for drugs. If the allergen is unavoidable, immunotherapy (see pp. 164-8) or some alternative form of desensitisation (see pp. 210-13) could be very helpful.
Where drugs are needed, nose drops are best. They get the drugs right to the target so doses are minimal, which means very few side effects. The drugs used are:
• cromoglycate to prevent the allergic reaction before it starts (148)
• antihistamines to block the allergic reaction before it produces inflammation (138)
• steroids to calm down inflammation (144). Steroid nose drops are also useful for NARES and triad. If you are taking steroid drops continuously, your doctor should check the membranes inside your nose every six months. Make sure you put the drops in correctly, especially if you have polyps (144).
If you suffer stinging, burning or dryness, it might be due to preservatives in the drops, not the drug itself (see box on p. 33), so talk to your doctor about a different formulation.
Don’t use over-the-counter decongestant drops: they do nothing to treat the allergy or inflammation, and are little more than a ‘chemical crowbar’ to open up the nose. Your nose gets addicted to them in a few days, and when you stop using them you get ‘rebound congestion’ - absolute and total blockage. It does wear off eventually, but is unpleasant meanwhile. If you are suffering this problem at this very moment, don’t put more decongestant drops in - your nose needs to go ‘cold turkey’ to recover, not have its addiction fed!
If none of the anti-allergy drugs work, but decongestant drops do, then you probably have a non-allergic disease called vasomotor rhinitis. The symptoms are very similar to allergic rhinitis, but without the sneezing and itching. See your doctor again, because there is an effective treatment that uses anticholinergic drugs (see box on p. 156). Acupuncture (see below) can also be helpful.
An elimination diet (194) will diagnose any food reactions. It works wonders for some people with severe and unexplained perennial rhinitis, Including people with such a flood of mucus that they can scarcely work or live normally. You should certainly give this diagnostic diet a try if there are clues that suggest food is the culprit (69) or if no airborne allergen can be identified. Yeast - found in bread, beer and B-vitamin tablets -is quite often the culprit in rhinitis, but it could be any food.
Acupuncture is worth trying, to reduce the blockage in the nose and stem the flow of mucus, because the autonomic nervous system (see box on p. 235) plays some part in the symptoms of allergic rhinitis (and is the sole cause of the symptoms for those with vasomotor rhinitis). For those with severe sinusitis, osteopathy can be good for draining mucus from the sinuses.
Very occasionally, psychological or emotional reactions play a part in perennial allergic rhinitis, with symptoms getting significantly worse during stressful events. One possible manifestation of this is post-coital rhinitis, where sex brings on rhinitis (and sometimes asthma as well). In such cases, psychotherapy should be considered. (But check you are not just allergic to the dust mites in your bed first…)
A nose by any other name…
Rhinitis means inflammation (-itis) of the nose (rhin-). The same Greek word gives us rhinoceros - ‘nose-horn’.