Inflammation: There are many causes of asthma, allergies and pollution and reactions to infections are just a few. Inflammation builds up in the airways and so does tightening of the muscles in their walls and then asthma is triggered by certain factors and mucus can plug the airways in severe cases.
Answered 1/15/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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