Medical Definition of Skin test for allergy

Reviewed on 3/29/2021

Skin test for allergy: A test in which a small drop of the suspected allergy-provoking substance (allergen) is placed on the skin and the skin is then gently scratched through the drop with a sterile needle. If the skin reddens and, more importantly, if it swells, the test is read as positive, and allergy to that substance is considered probable.

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QUESTION

Allergies can best be described as: See Answer

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