Skin allergy testing
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Skin allergy testing is a method for medical diagnosis of allergies. A microscopic amount of an allergen is introduced to a patient's skin by various means:
- by pricking the skin with a needle or pin containing a small amount of the allergen ('Prick Testing' or 'Scratch Testing')
- by applying a patch to the skin, where the patch contains the allergen.
If an immuno-response is seen in the form of a rash, hives, urticaria or (worse) anaphylaxis it can be concluded that the patient has a hypersensitivity (or allergy) to that allergen. Further testing can be done to identify the particular allergen.
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