Medical Definition of Atopy

Atopy: The genetic tendency to develop the classic allergic diseases -- atopic dermatitis, allergic rhinitis (hay fever), and asthma. Atopy involves the capacity to produce IgE in response to common environmental proteins such as house dustmite, grass pollen, and food allergens. From the Greek atopos meaning out of place.

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Last Editorial Review: 5/13/2016

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