![Illustratiion of a human torso showing the lungs inside the chest. Two smaller adjacent illustrations show bronchitis illustrated by puss oozing from a partially blocked bronchial tube and emphysema, represented by swollen discolored air sacs in the lung.](/sites/default/files/styles/max_650x650/public/image/COPD%20illustration.jpg?itok=GlYZ77NU)
Chronic Obstructive Pulmonary Disease (COPD) is a lung condition where the lungs are damaged or remodeled in a way that they can't go back to normal, leading to long-term breathing problems.
- Chronic: long-term
- Obstructive: limited air flow
- Pulmonary: lung
- Disease: a harmful condition that can compromise health and quality of life
COPD is associated with inflammation, mucus build-up, and tightening of the muscle bands around the airways (as often seen in chronic bronchitis) and deterioration of the air sacs (as often seen in emphysema). COPD may also be linked to certain genetic conditions, and injuries to the brain or spine. Asthma isn't considered COPD, but some people with asthma might also have COPD.