Asthma can strike at any age, half of all cases first occur in children under age 10; in this age group, asthma affects twice as many boys as girls. It is one of the leading causes of respiratory illness among children and young adults, however, this condition may progress a lifetime. It's estimated 17-million Americans suffer from asthma.
Asthma is a reversible lung disease characterized by obstruction or narrowing of the airways, the lining of the airways . It may resolve spontaneously or with treatment. Its symptoms range from mild wheezing and shortness of breathe (dyspnea) to life-threatening respiratory failure. Symptoms may persist between acute episodes.
People with asthma do not have a problem inhaling, but rather, a problem exhaling. Airways open up View the rest of this article
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