Bronchitis - Symptoms and causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/bronchitis/symptoms-causes/syc-20355566
WEBApr 11, 2017 · Chronic bronchitis, a more serious condition, is a constant irritation or inflammation of the lining of the bronchial tubes, often due to smoking. Acute bronchitis, also called a chest cold, usually improves within a week to 10 days without lasting effects, although the cough may linger for weeks.
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