Definition for Asthma
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Revision as of 15:03, 11 March 2014 by Zain67 (Talk | contribs) (Asthma attacks all age groups but often starts in childhood. It is a disease characterized by recurrent attacks of breathlessness and wheezing, which vary in severity and frequency from person to pers)
A disease in which the smooth muscles around the bronchioles contract more than usual, increasing resistance to airflow.
