What is bronchitis?

Bronchitis is inflammation of the mucous membrane of the bronchi.
acute b. A form of bronchitis that is generally self-limited, lasting only a few days, with complete recovery; it usually occurs as a complication of an upper respiratory infection.
chronic b. Generalized narrowing and obstruction of the airways in the lungs lasting longer than three consecutive months in at least two successive years.
chronic obstructive b. Term used when chronic bronchitis is associated with extensive abnormalities and obstruction of the smaller airways.

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