Bronchitis is an inflammation of the bronchial tubes, the airways that carry air to your lungs. It causes a cough that often brings up mucus, as well as shortness of breath, wheezing, and chest tightness. There are two main types of bronchitis: acute and chronic. Chronic bronchitis is one type of COPD (chronic obstructive pulmonary disease). Chronic bronchitis is a long-term condition that never goes away completely.
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