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Journal of Asthma Volume 41, 2004 - Issue 2
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Original Article

Laughter‐Associated Asthma

G. Liangas Faculty of Medicine, University of New South Wales, Randwick, New South Wales, Sydney, 2031, Australia; Departments of Respiratory Medicine, Sydney Children's Hospital, Randwick, New South Wales, 2031, Australia
,
D. H. Yates St. Vincent's Hospital, Randwick, New South Wales, 2031, Australia
,
D. Wu Prince of Wales Hospital, Randwick, New South Wales, 2031, Australia
,
R. L. Henry Faculty of Medicine, University of New South Wales, Randwick, New South Wales, Sydney, 2031, Australia; Departments of Respiratory Medicine, Sydney Children's Hospital, Randwick, New South Wales, 2031, Australia
&
Paul S. Thomas Prince of Wales Hospital, Randwick, New South Wales, 2031, Australia; Faculty of Medicine, University of New South Wales, Randwick, New South Wales, Sydney, 2031, Australia; Prince of Wales Hospital, Randwick, New South Wales, 2031, Australia
Pages 217-221 | Published online: 26 Aug 2009
 
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Abstract

This study was conducted to assess the prevalence of laughter‐induced asthma, and to study any associations with asthma‐related triggers and measures of disease activity, using a questionnaire‐based survey of asthma subjects in both the community and on presentation to hospital. A total of 105 subjects participated, and 44 (41.9%) reported laughter‐associated asthma. Exercise and laughter were strongly associated as triggers (p < 0.006), as well as molds and grass pollen (p = 0.03). It seems to be associated with poor asthma control as well, since hospital admissions are also more frequent in this group (p = 0.043). Laughter‐induced asthma is strongly associated with exercise as a trigger; the mechanism remains uncertain, but better understanding of this problem may assist in controlling difficult asthma.

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