![Inside view of mucus draining from nasal cavity into throat, causing sore throat.](https://content.healthwise.net/resources/14.1/en-us/media/medical/hw/acp9138_368x240.jpg)
Postnasal drip is when mucus from the nasal cavity and sinuses drains into the throat. Postnasal drip can cause a sore throat, laryngitis, a cough, bad breath, hoarseness, and sometimes wheezing.
Postnasal drip often improves on its own, but if it lingers it may need treatment.
Current as of: September 27, 2023
Author: Healthwise Staff
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