Chronic obstructive pulmonary disease (COPD) is the term used to describe a group of health conditions that affect the lungs, cause breathing difficulties and long-term damage to the airways.
It includes conditions such as chronic bronchitis, where the airways are inflamed and become narrowed, and emphysema, where there is damage to the small air sacs (alveoli).
- Chronic = long-term
- Obstructive = narrowing of the airways
- Pulmonary = involving the lungs
- Disease = illness
