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A person eats a food that they are allergic too for the first time.
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When the food is consumed, the body creates an antibody, or a protein that detects the harmful food.
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The antibody attaches itself to cells found in tissues all over the body in order to prepare the body for the harmful substance in case it is consumed again
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When the food renters the body, the allergen binds to the antibodies and sends out signals to the body to release large amounts of histamine.
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The histamine causes skin irritation and swelling across the body.
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The result of this irritation varies from hives, shortness of breath, and anaphylaxis.
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