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Bronchitis

life science Maturity 11-13 Next article →

Bronchitis is a sickness in your lungs. It happens when your bronchi get swollen. The bronchi are the large and medium tubes in your lungs.

Bronchitis
Bronchitis

This swelling causes a cough. Often, a sickness starts in your nose or throat. Then, the sickness moves down into your lungs.

There are two main types. The first is acute bronchitis. This is like a chest cold. It is often caused by a virus. A virus is a tiny germ. Most cases come from these germs. You can catch them from the air or by touch. This type usually lasts about three weeks.

The second type is chronic bronchitis. This lasts a long time. It means a cough that stays for three months or more. This happens every year for at least two years. Smoking is the most common cause of this type. Dust and air pollution can also cause it.

Plastic bronchitis casts
Plastic bronchitis casts

Some people with this also have COPD. COPD is a disease that makes it hard to breathe. Doctors may use oxygen to help these people.

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File:Plastic_bronchitis_casts.png
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