What is COPD?
Chronic obstructive pulmonary disease (COPD) is one of the most common lung diseases. It makes it difficult to breathe. There are two main forms of COPD:
- Chronic bronchitis, which involves a long-term cough with mucus
- Emphysema, which involves destruction of the lungs over time
Most people with COPD have a combination of both conditions.
To find out more about COPD:
U.S. National Library of Medicine: www.ncbi.nlm.nih.gov