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What causes bronchitis?

ANSWER

Most often, the same viruses that give you a cold or the flu also cause bronchitis. Sometimes, though, bacteria are to blame.

In both cases, as your body fights off the germs, your bronchial tubes swell and produce more mucus. That means you have smaller openings for air to flow, which can make it harder to breathe.

From: Is It Bronchitis or Pneumonia? WebMD Medical Reference

SOURCES:

Mayo Clinic: “Bronchitis,” “Pneumonia.”

American Lung Association: “Learn About Pneumonia,” “Acute Bronchitis Symptoms, Causes, and Risk Factors,” “Pneumonia Symptoms, Causes, and Risk Factors,” “Diagnosing and Treating Pneumonia.”

FamilyDoctor.org: “Acute Bronchitis.”

Harvard Health Publications, Harvard Medical School: “Acute Bronchitis.”

NIH, National Heart, Lung, and Blood Institute: “Explore Pneumonia.”

CDC: “Get Smart: Know When Antibiotics Work.”

National Health Service (U.K.): “Bronchitis.”

Reviewed by Neha Pathak on December 06, 2016

SOURCES:

Mayo Clinic: “Bronchitis,” “Pneumonia.”

American Lung Association: “Learn About Pneumonia,” “Acute Bronchitis Symptoms, Causes, and Risk Factors,” “Pneumonia Symptoms, Causes, and Risk Factors,” “Diagnosing and Treating Pneumonia.”

FamilyDoctor.org: “Acute Bronchitis.”

Harvard Health Publications, Harvard Medical School: “Acute Bronchitis.”

NIH, National Heart, Lung, and Blood Institute: “Explore Pneumonia.”

CDC: “Get Smart: Know When Antibiotics Work.”

National Health Service (U.K.): “Bronchitis.”

Reviewed by Neha Pathak on December 06, 2016

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What causes pneumonia?

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