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What type of disease is athma- virus, bacteria, fungus or parasite


Asthma is not an infection with a virus, bacteria, fungus or parasite. Asthma is a condition where the breathing tubes in the lung close up. They become narrowed because of contraction of the muscle around the breathing tubes (bronchial tubes) and production of excess mucus. This reaction of the muscles around the bronchial tubes can be the result of infections, such as those you list, but also can be brought on by allergic reactions or exposure to irritants like smoke. There usually is also production of mucus in response to the irritation and the mucous can also plug up the breathing tubes. The result is shortness of breath and a wheezing sound as the air is forced through narrowed breathing tubes and around the excess mucus.

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Response by:

Charity C Fox, MD Charity C Fox, MD
Clinical Associate Professor of Pulmonary, Allergy, Critical Care & Sleep
College of Medicine
The Ohio State University