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Learn about Asthma
by: healthcentral
| Running Time: 75 seconds |
Published: 2010-05-08 23:54:11 |
Asthma is a disorder of obstruction to breathing due to inflammation and narrowing of the bronchial tubes. Pollen, pet dander, weather changes, tobacco smoke, etc. can trigger and worsen asthma symptoms in susceptible patients.
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