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Cough
A cough is a common reflex action that aims to clear the throat of mucus or foreign irritants. Coughing to clear the throat is typically an infrequent action, although there are a number of other conditions that can cause more frequent bouts of coughing. Most coughs will clear up, or at least significantly improve, within two weeks. Any cough that produces blood or hasn't improved after a few weeks may be serious. More »
Source: healthline.com

en.wikipedia.org/wiki/Cough

A cough is a sudden and often repetitively occurring, protective reflex, which helps to clear the large breathing passages from fluids, irritants, foreign particles  ...

www.medicalnewstoday.com/articles/220349.php

Dec 6, 2016 ... A cough, also known as tussis, is a sudden reflex that humans and many animals have. Its purpose is to clear the throat and breathing passage ...

www.mayoclinic.org/symptoms/cough/basics/definition/sym-20050846

Apr 26, 2016 ... A cough is your body's way of responding when something irritates your throat or airways. An irritant stimulates nerves that send a message to ...

www.webmd.com/cold-and-flu/overview

Oct 27, 2015 ... WebMD has the basics on common triggers, related symptoms, and treatment options for your cough.

www.healthline.com/symptom/cough

Mar 16, 2017 ... A cough is a common reflex action that clears the throat of mucus or foreign irritants. Coughing to clear the throat is typically an infrequent ...

www.webmd.com/cold-and-flu/features/stubborn-cough

Jul 2, 2015 ... Are you fed up with your stubborn cough? There are many reasons why a cough may not improve, and that can be frustrating for people and ...

medlineplus.gov/cough.html

May 1, 2017 ... Coughing helps your body heal or protect itself. There are two types of coughs: acute and chronic. Learn the causes of chronic cough.

www.nhlbi.nih.gov/health/health-topics/topics/cough

Dec 9, 2016 ... Cough. A cough is your body's natural reflex to help clear your airways of irritants and prevent infection. Common irritants include smoke, ...

www.emedicinehealth.com/coughs/article_em.htm

Feb 19, 2016 ... Learn about coughs, (acute, chronic, or persistent), which can have common causes such as infections, or chronic (persistent) cough may be ...