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.
| By | Healthwise Staff |
| Primary Medical Reviewer | E. Gregory Thompson, MD - Internal Medicine |
| Specialist Medical Reviewer | Rohit K Katial, MD - Allergy and Immunology |
| Last Revised | February 13, 2011 |
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