Bronchitis is the inflammation of the airways, also called bronchi. The usual symptom is that phlegm is coughed up almost daily over a longer period of time. Bronchitis can be acute (temporary) or chronic (permanent).
Bronchitis is the inflammation of the airways, also called bronchi. The usual symptom is that phlegm is coughed up almost daily over a longer period of time. Bronchitis can be acute (temporary) or chronic (permanent).