Bronchitis is inflammation of the lining of the tubes that lead from the windpipe (trachea) to the lungs. The lining becomes irritated and produces more mucus, making it difficult to breathe.

Acute bronchitis is usually caused by viruses and lasts only a short time. Chronic bronchitis lasts much longer and may also be caused by smoking.

Bronchitis
[ Teens/Mature Teens ] Explains the different types of this respiratory illness. Includes causes, symptoms, diagnosis, and what medicines are prescribed.
Bronchitis
[ Teens/Mature Teens ] Article from TeensHealth explains this respiratory disease. Includes symptoms, causes, what doctors do, and smoking and bronchitis.
Mayo Clinic: Bronchitis
[ Teens/Mature Teens ] Learn how this infection develops, often after a cold. Includes signs and symptoms, causes, risk factors, when to see the doctor, treatment, and complications.
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Last update:
May 3, 2016 at 0:54:23 UTC
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