What is COPD? Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung condition that makes it hard to breathe. It's more than just a cough—COPD affects millions worldwide and can cause serious long-term health problems. Symptoms of COPD • Persistent cough • Wet cough • Breathlessness • Whistling sound during breathing Watch Dr. Ramasubramaniam K of Kauvery Hospital, one of the best pulmonologists in Trichy, break down the key symptoms of COPD, & how it impacts your lungs.