PERSPECTIVE
Asthma
Exercise induced asthma: real or imagined?
Correspondence to:
Correspondence to:
Prof. P J Helms
Dept of Child Health, University of Aberdeen, Royal Aberdeen Children’s Hospital Westburn Road, Aberdeen AB25 2ZG, UK; p.j.helms@abdn.ac.uk
Commentary on the paper by Seear et al (see page898)
Keywords: asthma; diagnosis; exercise
| The first 150 words of the full text of this article appear below. |
Although there is unanimity in the general public’s mind that childhood asthma is continuing to rise, evidence is accumulating that the prevalence has now plateaued, or may even be in gradual decline.1 Whether this is real or confounded by changes in diagnostic labelling remains unclear. Whatever the prevalence, the underlying causes remain elusive, and suggestions are as numerous as research groups, each with their own agendas to promote. It is possible to build cases for a number of different environmental factors including varying exposures to specific allergens,2 to bacterial and viral pathogens and their products (the hygiene hypothesis),3,4 to environmental air pollution,5 to diet,6 and to obesity,7 among a range of ever increasing suggestions. An important issue for the public and for many health professionals, particularly those not familiar with the extensive primary literature, is to distinguish between those factors that might be relevant to causation and those that
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- How accurate is the diagnosis of exercise induced asthma among Vancouver schoolchildren?
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