What are the effects of animal allergens and how are they best managed to improve symptoms of asthma?

Updated: Nov 20, 2020
  • Author: Michael J Morris, MD, FACP, FCCP; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Because of the small size (1-20 μm) of dander, saliva, urine, or serum proteins of cats and other animals, these allergens are predominantly airborne indoor allergens. Avoidance involves removing animals from the home (or at least from the bedroom), using dense filtering material over heating and cooling duct vents, and washing cats and dogs as often as twice weekly. The antigens may remain in a home for 6 months or more after cats are removed from the home, and cat antigen may be found in homes and offices where cats were never present, highlighting the importance of frequent cleaning.

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