Definition: Whistling noise heard when breathing when the airways are narrowed as a result of inflammation. Wheezing most commonly occurs on expiration, or breathing out, and is a common sign of worsening asthma. It may be associated with other classic symptoms of asthma such as cough, shortness of breath, and chest tightness.
Wheezing Definition
By Pat Bass, About.com
Updated: February 18, 2009
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
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