br2Bronchitis is an infection of the bronchi, the main airways of the lungs, and acute bronchitis is one of the most common lower respiratory tract infections.

The walls of the bronchi make mucus to trap inhaled particles that could cause irritation, so when the bronchi become irritated and inflamed they produce more of the yellow-grey mucus than usual, which the hacking cough tries to shift. Bronchitis can also cause a sore throat, wheezing and a blocked nose.



Chronic bronchitis
Symptoms of bronchitis
Causes of bronchitis
Diagnosing bronchitis
Spirometer test
Treating bronchitis
Chronic bronchitis


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