Asthma
Asthma is a common chronic inflammatory disease of the airways characterized by symptoms including wheezing, coughing, chest tightness, and shortness of breath, reversible airflow obstruction, and bronchospasm. Asthma is clinically classified according to the frequency of symptoms, forced expiratory volume in 1 second (FEV1), and peak expiratory flow rate. Asthma may also be classified as…