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    Question ID:   10050         Current Version: 1
Question: What is cough?
Category: Diseases & Conditions > Other
Keywords: cough
Type: what
Rating:(0 ratings)    Views: 440    Discussions: 0   In Watch Lists: 1  

 
    Answer:
A cough is a natural reflex that protects your lungs. Coughing helps clear your airways of lung irritants, such as smoke and mucus (a slimy substance). This helps prevent infection. A cough also can be a symptom of a medical problem.

Prolonged coughing can cause unpleasant side effects, such as chest pain, exhaustion, light-headedness, and loss of bladder control. Coughing also can interfere with sleep, socializing, and work.

Overview

Coughing occurs when the nerve endings in your airways become irritated. The airways are tubes that carry air into and out of your lungs. Certain substances (such as smoke and pollen), medical conditions, and medicines can irritate these nerve endings.

A cough can be acute, subacute, or chronic, depending on how long it lasts. An acute cough lasts less than 3 weeks. A common cold or other upper respiratory infection most often causes an acute cough. Examples of other upper respiratory infections include the flu, pneumonia (nu-MO-ne-ah), and whooping cough.

A subacute cough lasts 3 to 8 weeks. This type of cough remains even after a cold or other respiratory infection is over.

A chronic cough lasts more than 8 weeks. Postnasal drip, asthma, and gastroesophageal (GAS-tro-eh-so-fa-JE-al) reflux disease, or GERD, most often cause chronic cough.

Postnasal drip is mucus that runs down your throat from the back of your nose. Asthma is a long-term lung disease that inflames and narrows the airways. GERD occurs when acid from your stomach backs up into your throat.

Outlook

The best way to treat a cough is to treat its cause. For example, asthma is treated with medicines that open up the airways.

Your doctor may recommend a cough medicine if the cause of your cough is unknown and the cough causes a lot of discomfort. Cough medicines may harm children. If your child has a cough, talk to his or her doctor about how to treat it.

Learn more about cough:

  • who is at risk for cough?
  • what causes cough?
  • what are the signs and symptoms of cough and how is it diagnosed?
  • how is cough treated?
  • how to live with cough?
Source: National Heart Lung and Blood Institute
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