Asthma Overview
Asthma causes airway inflammation and reversible obstruction.
Bronchoconstriction
Bronchoconstriction narrows airways and reduces airflow.
Trigger Exposure
Triggers include allergens exercise and irritants.
Medication Use
Bronchodilators and steroids help control symptoms.
Asthma Prevalence
Asthma affects millions of adults and children.
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