If you are experiencing a medical emergency please dial 911 immediately
In asthma, the airways that carry air to the lungs (bronchial tubes) are inflamed. This can narrow the airways, causing shortness of breath and making it difficult to breathe.
Last Revised: February 22, 2013
Author: Healthwise Staff
Medical Review: E. Gregory Thompson, MD - Internal Medicine & Rohit K Katial, MD - Allergy and Immunology
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