- Types:
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hives, nettle rash, urticaria, urtication
an itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs
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allergic reaction, allergy
hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
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anaphylaxis
hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance
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allergic rhinitis
rhinitis caused by an allergic reaction
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anaphylactic shock
a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure
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food allergy
allergic reaction to a substance ingested in food
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atopic allergy, atopy, immediate allergy, type I allergic reaction
an allergic reaction that becomes apparent in a sensitized person only minutes after contact
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serum disease, serum sickness
a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum
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delayed allergy, type IV allergic reaction
an allergic reaction that becomes apparent only hours after contact
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hay fever, pollinosis
a seasonal rhinitis resulting from an allergic reaction to pollen
