COPD

Chronic obstructive pulmonary disease is a type of lung disease in which the lungs are damaged and results in difficulty breathing. The air passageways in people with COPD have become partly obstructed, impairing airflow in and out of the lungs. The air passageways also become clogged with mucus. A large percentage of COPD cases are caused by cigarette smoking; but there are other causes or contributory factors such as chemicals and other lung irritants.
(OPTN Glossary May 2021)