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  • Title: Characteristics of subjects experiencing hypersensitivity to non-steroidal anti-inflammatory drugs: patterns of response.
    Author: Doña I, Blanca-López N, Cornejo-García JA, Torres MJ, Laguna JJ, Fernández J, Rosado A, Rondón C, Campo P, Agúndez JA, Blanca M, Canto G.
    Journal: Clin Exp Allergy; 2011 Jan; 41(1):86-95. PubMed ID: 21155908.
    Abstract:
    BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAIDs) are one of the most frequently involved groups of medicines in hypersensitivity drug reactions. Two mechanisms can induce the reaction: immunological (sensitization) due to a specific IgE or T cell response and pharmacological (cyclooxygenase inhibition). The contribution of each of these mechanisms to the reactions is not well known. OBJECTIVE: To analyse a large group of subjects with confirmed hypersensitivity reactions to NSAIDs. METHODS: The drugs involved, the clinical entities induced and the time interval between drug intake and appearance of the reaction were studied. In cases where the diagnosis was not confirmed, a drug provocation test was carried out. Atopy status was also assessed with prick test and total IgE in serum. RESULTS: A total of 659 patients were finally considered to have had hypersensitivity reactions to NSAIDs; 76% had cross-intolerance (CI) and 24% were selective responders (SR). The most important drugs involved in CI were propionic acid derivatives, in most cases ibuprofen, and in SR pyrazolones. In CI, the most frequent clinical entity was urticaria and angio-oedema and to a lesser extent airway involvement. The skin and airways were both involved in an important proportion of cases. The most frequent entities in SR were urticaria and/or angio-oedema followed by anaphylaxis. Atopy was significantly associated in the CI group (P<0.005). CONCLUSION AND CLINICAL RELEVANCE: Cutaneous hypersensitivity reactions by CI to NSAIDs are the most frequent entities induced by these compounds. In addition to aspirin, other NSAIDs are taking on a predominant role. Atopy can be a predisposing factor in patients with CI.
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