Chronic bronchitis

Chronic bronchitis is a chronic inflammation of the bronchi (medium-size airways) in the lungs. It is generally considered one of the two forms of chronic obstructive pulmonary disease (COPD). It is defined clinically as a persistent cough that produces sputum (phlegm) and mucus, for at least three months per year in two consecutive years. Bronchitis may be indicated by a cough (also known as a productive cough, i.e. one that produces sputum), sh... More
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