lungs. The swelling causes more mucus than normal to be made. This can
block the airflow through the lungs and may damage the lungs.
Acute bronchitis lasts 2-4 weeks and can be treated.
Chronic bronchitis is a long-term disease of the lungs. It is one disease in a
group of lung diseases called COPD or chronic obstructive pulmonary
disease. The damage often gets worse over time and cannot be cured.