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A 43-year-old member asked:

What is causing hypersensitivity pneumonitis?

1 doctor answer4 doctors weighed in
Dr. Aaron Milstone
Pulmonology 27 years experience
Sherlock Holmes: It can be extremely difficulty to identify the source of hypersensitivity penumonitis; there are literally tens and tens of sources for the illness. Some of the top offenders include: •bird droppings •humidifiers, heating systems, and hot tubs •liquid chemicals used in the landscaping and florist industries •moldy hay, straw, and grain •chemicals released during the production of plastics and ele.

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Last updated May 31, 2013

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