Postnasal drip occurs when mucus from the nasal passages and sinuses drains into the throat. If the mucus becomes thick, postnasal drip can cause problems such as a sore throat, laryngitis, a cough, bad breath, hoarseness, and sometimes wheezing.
A problem caused by postnasal drip often improves on its own, but if it lingers, it may need treatment with medicines.
Last Revised: September 12, 2012
Author: Healthwise Staff
Medical Review: Patrice Burgess, MD - Family Medicine & Donald R. Mintz, MD - Otolaryngology
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