Nocturnal Asthma Symptoms May Be More Prevalent than We Think

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Abstract
We evaluated the prevalence of nocturnal asthma in our subspecialty allergy clinic to see whether it was significantly different than the prevalence in a previous study (3). A questionnaire was sent to 1258 patients, and there were 325 responses. Of the 325, 304 patients had asthma. A total of 204 (67%) of these had nocturnal symptoms of asthma. Eleven percent of the total population awakened every night, 16% awakened three to six nights per week, 20% one or two nights per week, 20% one night per month, and 33% not at all. We discovered that patients had a rather nonchalant view of their asthma and frequently did not report nocturnal symptoms to their doctors. We conclude that even in a specialty allergy and asthma practice, nocturnal asthma symptoms may be more prevalent than suspected. The reason for this is unclear but may be related to a problem with patient perception and possibly to a lack of diligence in physician history taking.

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