Abstract
The European Network for Drug Allergy (ENDA) proposed a consensus document for hypersensitivity reactions to nonsteroidal anti-inflammatory drugs (NSAIDs) in 2011. A subgroup of patients with NSAIDs-exacerbated respiratory disease (NERD) develop urticaria/angioedema type reactions in response to NSAIDs. The Kalyoncu classification might be a novel option to classify patients with NSAID hypersensitivity (NH). In this study, we compare the ENDA and the Kalyoncu classifications. This study enrolled a total of 196 patients. NH reaction types were categorized as asthma, rhinitis, urticaria/angioedema and anaphylaxis. Based on the reaction history and oral provocation test findings, patients were grouped according to ENDA and Kalyoncu classifications. The mean age of the 196 patients was 40.32±13.28 years, and 130 (66.3%) of them were female. Under the ENDA and Kalyoncu classifications, the most common NH subgroups were NERD (32%), and isolated NH (34.2%), the least prevalent NH subgroups were single NSAID-induced delayed reactions (SNIDR) (1.5%), and pseudo Samter's syndrome (11.7%). Our research revealed that the Kalyoncu classification is more descriptive of patients with NERD exhibiting urticaria/angioedema-type reactions. It also provides future risk assessment for development of NERD. For controversial cases, the Kalyoncu classification can be utilized as a new complimentary option alone or in conjunction with ENDA classification.
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