Bronchitis | NHLBI, NIH

Bronchitis is a condition in which the airways in the lungs become inflamed and cause coughing, often with mucus, or wheezing. Acute bronchitis goes away after a few weeks but chronic bronchitis last for months and can be serious. Learn more about symptoms and treatment, and how to participate in clinical trials.

https://www.nhlbi.nih.gov/health-topics/bronchitis