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Drug-induced anaphylaxis: seven-year single-center survey.

Summary: Background and Objective. Drug-induced anaphylaxis (DIA) is the most common cause of fatal anaphylaxis. We aimed to characterize patients with DIA and their allergological workup. Methods. Systematic review of patients with history of DIA referred to our center over 7 years. Results. Included 125 patients (10% pediatric age), being 36 years the median age of first episode (from 1 to 74 years). The main culprits were nonsteroidal anti-inflammatory drugs (NSAIDs) (43%), antibiotics (42%) and anesthetic agents (6%). In 24% the reactions occurred in hospital setting and 14% perioperative. The etiology was confirmed in 75% through allergological workup. Conclusions. NSAIDs and antibiotics were responsible for most of DIA. The heterogeneity of mechanisms, the severity of the reactions and the lack of standardized in vivo and/or in vitro tests for some drugs do not allow to confirm the diagnosis in all cases. Patients with DIA should be evaluated in specialized centers to perform accurate diagnosis, to prevent recurrence and to find safe alternatives.

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