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Cough

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Introduction
A cough is a reflex action to clear your airways of mucus and irritants such as dust or smoke. Coughs may be dry or chesty and most clear up within three weeks.
Causes of a cough
Most coughs are caused by viral infections and usually clear up on their own. Doctors often classify coughs according to how long they last.
Treating a cough
There's no quick way of getting rid of a cough caused by a viral infection. It will usually clear up after your immune system has fought off the virus.
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