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Animal-Related Allergies

Source: www.etsu.edu
Topic: Animals
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Sort Desciption: Animal-Related Allergies. Allergic reactions to animals are ... developing allergy symptoms related to. laboratory animal exposure, you should ...

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Animal-Related Allergies Occupational Health Program for Personnel Exposed to Vertebrate Animals East Tennessee State University Animal-Related Allergies Allergic reactions to animals are among the most common conditions that adversely affect the health of worker involved in the care and use of animals in research. The estimated prevalence of allergic symptoms in this group ranges from 10% to 44%. Up to 73% of persons with pre-existing allergic disease eventually develop an allergy to laboratory animals. Allergy is most often manifested by nasal symptoms, itchy eyes and rashes. Symptoms usually evolve over an exposure period of one (1) to two (2) years. Occupation-related asthma, a more serious disorder, can develop in about 10% of persons with allergic disease who work with laboratory animals. This condition can lead to chronic symptoms, persisting for months to years, even after exposure ceases. Contact urticaria (hives) is typically due to the application of an allergen (usually a protein or glycoprotein) directly onto the skin. A common example is the development of wheal and flare reactions that produce welts when a persons skin and the tail of a mouse or rat come into contact. Scratches by cats and dogs can produce similar responses. Latex in rubber gloves is another cause of contact urticaria. In rare instances, a person who has become sensitized to an animal protein experiences a generalized allergic reaction termed anaphylaxis when bitten by an animal. Anaphylactic reactions vary from mild generalized urticaria reactions to profound life-threatening reactions. Anaphylaxis can be evident as diffuse itching hives, and swelling of the face, lips, and tongue. Some people experience difficulty in breathing because of laryngeal edema or develop asthma with wheezing. In some cases shock can lead to loss of consciousness. The diagnosis of animal sensitivity is based on the history of symptoms in conjunction with exposure as well as on allergy tests ...

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