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2. Post-nasal drip - Wikipedia

   en.wikipedia.org/wiki/Post-nasal_drip

   Post-nasal drip (PND), also known as upper airway cough syndrome (UACS), occurs when excessive mucus is produced by the nasal mucosa. The excess mucus accumulates in the back of the nose , and eventually in the throat once it drips down the back of the throat.

3. Why are so many New Yorkers coughing? What's happening ... - AOL

   www.aol.com/why-many-yorkers-coughing-whats...

   Sub-acute cough: Lasts three to eight weeks. Can lead patients to seek medical care because it disrupts sleep, work, and social life. ... The three main chronic cough causes are: Post-nasal drip ...

4. The Type of Cough Medicine You Take Could Make a Big ... - AOL

   www.aol.com/type-cough-medicine-could-big...

   If your cough is also accompanied by sinus problems and post-nasal drip — meaning, mucus trickles down your throat towards your mouth, triggering coughing — consider using a nasal irrigation ...

5. Got a Bad Cough Right Now? Here's the Cough Drop You ... - AOL

   www.aol.com/got-bad-cough-now-heres-190900048.html

   Here are the best cough drops and lozenges, according to a leading infectious disease expert. ... Coughs can also be chronic, resulting from things like acid reflux, asthma, postnasal drip or a ...

6. Chronic cough - Wikipedia

   en.wikipedia.org/wiki/Chronic_cough

   Postnasal drip, when excess mucus is produced in the sinus of the nose and drips back towards the throat, causes a cough reflex, also known as upper airway cough syndrome. Postnasal drip coughing can be caused by the direct irritation of the postnasal drip or by inflammation of cough receptors in the upper airway.

7. Cough - Wikipedia

   en.wikipedia.org/wiki/Cough

   A cough is a sudden expulsion of air through the large breathing passages which can help clear them of fluids, irritants, foreign particles and microbes.As a protective reflex, coughing can be repetitive with the cough reflex following three phases: an inhalation, a forced exhalation against a closed glottis, and a violent release of air from the lungs following opening of the glottis, usually ...