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What is postnasal drip?

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Postnasal drip is a lay term that refers to the sensation of thick phlegm in the throat, which can become infected. Your glands in the nose and throat produce mucus continuously (1 to 2 pints per day), that helps to cleanse the nasal membranes, helps warm the air you breathe, and traps inhaled foreign matter. Mucus also helps to fight infection.

From: Sinus Infections and Asthma WebMD Medical Reference

SOURCES: American Academy of Allergy, Asthma & Immunology: "Tips to Remember: Sinusitis" and "Sinusitis." American Academy of Family Physicians: "Impact of Chronic Sinusitis on Patients with Asthma." Asthma and Allergy Foundation of America: "Rhinitis and Sinusitis" and "Sinus Problems." Dixon A.E. et al, August 2006.  Slavin R.G. , 2005.




Chest,ACP Medicine

Reviewed by Louise Chang on July 05, 2018

SOURCES: American Academy of Allergy, Asthma & Immunology: "Tips to Remember: Sinusitis" and "Sinusitis." American Academy of Family Physicians: "Impact of Chronic Sinusitis on Patients with Asthma." Asthma and Allergy Foundation of America: "Rhinitis and Sinusitis" and "Sinus Problems." Dixon A.E. et al, August 2006.  Slavin R.G. , 2005.




Chest,ACP Medicine

Reviewed by Louise Chang on July 05, 2018

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Can postnasal drip trigger asthma?

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