What's that nagging cough? Chronic cough is one of the most common reasons for patients to see a physician. Coughing interrupts sleep, producing fatigue and impairing concentration and work performance. In a new podcast commissioned by the Allergy, Asthma, and Immunology Committee, Christine Blanche Franzese, MD, Mark R. Gilbert, MD, and Thomas L. Carroll, MD, discuss the differential diagnosis for chronic cough as well as the work up. They also review various treatments for chronic cough and spend time discussing new treatments on the horizon for chronic cough.