Asthma's a chronic medical condition. It's been defined by the National Heart, Lung and Blood Institute of the United States of America as a common chronic disorder of the airways that's complex and characterized by variable and recurring symptoms, airflow obstruction, bronchial hyperresponsiveness (bronchospasm), and an underlying inflammation. The interaction of these features of asthma determines the clinical manifestations and severity of asthma and the response to treatment. Public attenti… (More on Asthma)