Development of non-steroidal anti-inflammatory drug intolerance over a 3 year period

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We report the detailed clinical course of a 47-year-old woman with aspirin-induced asthma in which non-steroidal anti-inflammatory drug (NSAID) intolerance developed over a 3 year period. The patient had mild asthma and was admitted with a femoral fracture in August 1996. Although she was given NSAIDs, including rectal diclofenac and oral loxoprofen, there was no worsening of asthma. After discharge, she was followed as having NSAID-tolerant asthma. When she developed perennial rhinitis and anosmia subsequent to an upper respiratory tract infection, asthma control was well maintained. Later, she experienced three episodes of severe asthmatic attacks after intake of aspirin or ketoprofen. Thus, we investigated her NSAID tolerability in September 1999. Sodium tolmetin inhalation challenge demonstrated a positive reaction, leading to the diagnosis of aspirin-induced asthma. Open challenges with loxoprofen and diclofenac also provoked positive reactions. The present case illustrates the potential variability of aspirin-induced asthma. Aspirin or NSAIDs challenge tests should be performed when nasal symptoms, particularly anosmia, develop or worsen.
Japanese Society of Allergologyの論文