A teenager with an annoying cough

Chronic cough is a stressful condition and can lead to extensive investigat ions. Bronchial asthma and postnasal drip syndrome are common causes, but s ometimes the origin of cough is outside the respiratory tract (1,2). Such a relatively simple test as esophageal pH probing may suggest appropriate (a ntireflux) therapy. (C) Society for Adolescent Medicine, 2000.