Asthma is a chronic inflammatory disorder of the airways, characterized by recurrent, reversible, airway obstruction.
For some people, asthma is a minor nuisance. For others, it can be a major problem that interferes with daily activities and may lead to a life-threatening asthma attack.
Asthma can't be cured, but its symptoms can be controlled. Because asthma often changes over time.
Asthma affects approximately 8.5% of the pediatric population in the U.S., or more than 7 million children.
Asthma accounts for more school absences and more hospitalizations than any other chronic condition in the US.
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