Chronic Obstructive Pulmonary Disease (COPD)
What Is It?
Chronic obstructive pulmonary disease (COPD) refers to a group of disorders that damage the lungs. These disorders make breathing increasingly difficult over time.
The most common forms of COPD are chronic bronchitis and emphysema. Both are chronic illnesses that impair airflow in the lungs. Most cases of COPD are related to cigarette smoking.