Although some reviews have reported that up to 60% of adults with chronic cough have unexplained or refractory cough, a rigorous systematic review showed that the prevalence is closer to 10%.

Barking cough—that is how a croup infection is identified in children and in adults. Croup is a respiratory infection that is caused by a virus and is commonly associated with young children.

This article covers “acute” bronchitis. This is different from “chronic” bronchitis, an illness in smokers with a long-last­ing cough. What are the symp­toms of bronchitis?