What is asthma? Chronic disease of the airways that may cause Wheezing dyspnea Chest tightness Nighttime or early morning coughing Episodes are usually associated with widespread, but variable, airflow obstruction within the lung that is often reversible either spontaneously or with treatmentWhat is Asthma? • Chronic disease of the airways that may cause • Wheezing • dyspnea • Chest tightness • Nighttime or early morning coughing • Episodes are usually associated with widespread, but variable, airflow obstruction within the lung that is often reversible either spontaneously or with treatment