NSAID facial angioedema in a selected pediatric atopic population.

Epidemiological data for drug reactions in pediatric medical literature as well as in specialized periodicals are scarce. A relationship between nonsteroidal antiinflammatory drugs (NSAIDs), facial angioedema and atopic status has been described in adults. A 10-year retrospective random review of 1,007 charts of atopic children (60.9% male) attending an allergy clinic for management of asthma and/or rhinitis was carried out. Careful attention was given to the written history of NSAID facial angioedema reactions (41 out of 1007, 4.07%) and atopy was confirmed if the patient had a family history and at least one positive skin prick test (>3 mm wheal compared to glycerosaline control) to aeroallergens. Telephone recall was performed when available. Patients were classified into four age groups as follows: a) 0-5 years old; b) 6-10 years old; c) 11-15 years old; and d) 16-21 years old. NSAID facial angioedema rates were as follows: group a 10/493 (2.0%), group b 14/361 (3.8%), group c 10/121 (8.2%), and group d 7/32 (21.8%). Aspirin was the most commonly reported NSAID, and less common were pyrazolones and ibuprofen. Of the 41 patient with chart-reported reactions, 27 (66%) could be contacted by telephone. Of these, 17 patients confirmed the facial angioedema NSAID reaction occurring once or more due to inadvertent exposure. No reactions were reported in the remaining 10 patients since no other NSAID, except acetaminophen, had been used for fever or pain. In conclusion, our data show the age dependency of these reactions and its rather frequent occurrence in such selected pediatric atopic populations. Since NSAIDs are used more frequently in younger children, exposure would not be a plausible explanation for these observations.