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  • Title: Corticosteroid allergy in asthma.
    Author: Kilpiö K, Hannuksela M.
    Journal: Allergy; 2003 Nov; 58(11):1131-5. PubMed ID: 14616123.
    Abstract:
    BACKGROUND: Glucocorticosteroids form the basis of therapy for asthma and other allergic diseases. However, they frequently cause delayed contact allergy and occasionally immediate allergy. The purpose of this study was to investigate the occurrence of corticosteroid allergy among patients with asthma and with some complaints caused by inhaled corticosteroids. METHODS: Patch tests with corticosteroids were performed in 51 asthma patients with side-effects from inhalant corticosteroids and in 50 symptom-free asthma patients using the Finn Chamber system. The corticosteroids and their vehicles were: betamethasone-17-valerate 1% in petrolatum, hydrocortisone-17-butyrate (Hc-17-B) 1% in ethanol, tixocortol-21-pivalate 1% in petrolatum, budesonide 0.1% in petrolatum, beclomethasone dipropionate 0.1 and 0.5% in petrolatum and as inhalant powder 200 microg, and fluticasone propionate 0.1 and 0.5% in petrolatum and as inhalant powder 250 microg. The results were read twice, on D4-5 and again on D10. RESULTS: Two patients in the symptomatic group reacted to corticosteroids in patch tests, one to betamethasone-17-valerate, Hc-17-B and budesonide, and the other to budesonide and Hc-17-B. The first patient suffered from widespread eczematous dermatitis when using beclomethasone. Fluticasone caused oropharyngeal irritation, hoarseness and shortness of breath. The second patient experienced a severe rash after the fourth budesonide inhalation. She had used various topical corticosteroids for her atopic dermatitis without any side-effects. None of the symptom-free patients showed positive results. CONCLUSIONS: Delayed allergy to corticosteroids occurs occasionally in asthma, perhaps in the same frequency as in dermatitis. A positive patch test reaction usually means clinical allergy, i.e. the patient cannot use that particular steroid. Cross allergy between corticosteroids is common. However, such patients usually tolerate some other common corticosteroids.
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