Chronic Obstructive Pulmonary Disease Center
Combo Therapy May Be Best for COPD
FDA Approves New Lung Disease Medication
Signs and Symptoms of COPD
COPD Linked to Belly Fat and Being Underweight
COPD, or chronic obstructive pulmonary disease, is a progressive disease that makes it hard to breathe. "Progressive" means the disease gets worse over time.
COPD can cause coughing that produces large amounts of mucus (a slimy substance), wheezing, shortness of breath, chest tightness, and other symptoms.
Cigarette smoking is the leading cause of COPD. Most people who have COPD smoke or used to smoke. Long-term exposure to other lung irritants, such as air pollution, chemical fumes, or dust, also may contribute to COPD.