Diseases, Conditions and Tests
The RxList disease and condition listing contains explanations of many medical conditions and tests. Disease articles are written by U.S. Board Certified Physicians. To use the listing, browse the terms by selecting a letter.
Asthma is a complex clinical syndrome of chronic airway inflammation characterized by recurrent, reversible, airway obstruction. Airway inflammation also leads to airway hyperreactivity, which causes airways to narrow in response to various stimuli.
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