Allergy testing is considered by most Board-Certified Allergists to be the best way to identify your allergens. Allergy testing is performed by scratching/pricking a small amount of allergen into your arm and seeing how much reaction it causes within 15 minutes. The reaction is caused by the interaction between the allergens, allergy antibodies (IgE) and your immune cells (mast cells.) Mast cells release histamine and other chemicals, causing itching, swelling, and redness at the site of the skin test.
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