Glossary of terms used on this site
| Term | Definition |
|---|---|
| Asthma |
A disease of the branches of the windpipe (bronchial tubes) that carry air in and out of the lungs. Asthma causes the airways to narrow, the lining of the airways to swell, and the cells that line the airways to produce more mucus. These changes make breathing difficult and cause a feeling of not getting enough air into the lungs. Asthma and Allergy Foundation of America |
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