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  2. Triple response of Lewis - Wikipedia

    en.wikipedia.org/wiki/Triple_response_of_Lewis

    Red spot, caused by capillary vasodilation. [1] [2] [3] Flare, a redness in the surrounding area due to arteriolar dilation mediated by axon reflex. [1] [2] [3] Wheal, caused by exudation of extracellular fluid from capillaries and venules. [1] [2] [3] The red spot emerges within 15 seconds. [4] Flare can take up to 45 seconds to begin. [4]

  3. Hypersensitivity - Wikipedia

    en.wikipedia.org/wiki/Hypersensitivity

    The treatment of immediate hypersensitivity reactions includes the management of anaphylaxis with intramuscular adrenaline (epinephrine), oxygen, intravenous (IV) antihistamine, support blood pressure with IV fluids, avoid latex gloves and equipment in patients who are allergic, and surgical procedures such as tracheotomy if there is severe ...

  4. Type IV hypersensitivity - Wikipedia

    en.wikipedia.org/wiki/Type_IV_hypersensitivity

    Type IV hypersensitivity, in the Gell and Coombs classification of allergic reactions, often called delayed-type hypersensitivity, is a type of hypersensitivity reaction that can take a day or more to develop. [1] Unlike the other types, it is not humoral (not antibody-mediated) but rather is a type of cell-mediated response.

  5. Anaphylaxis - Wikipedia

    en.wikipedia.org/wiki/Anaphylaxis

    Anaphylactoid reaction, non-immune anaphylaxis, or pseudoanaphylaxis, is a type of anaphylaxis that does not involve an allergic reaction but is due to direct mast cell degranulation. [ 10 ] [ 42 ] Non-immune anaphylaxis is the current term, as of 2018, used by the World Allergy Organization [ 42 ] with some recommending that the old ...

  6. Allergic inflammation - Wikipedia

    en.wikipedia.org/wiki/Allergic_inflammation

    Allergic reactions may generally be divided into two components; the early phase reaction, and the late phase reaction. While the contribution to the development of symptoms from each of the phases varies greatly between diseases, both are usually present and provide us a framework for understanding allergic disease. [1] [2] [3] [4]

  7. Yankees prospect taken to hospital due to allergic reaction ...

    www.aol.com/yankees-prospect-taken-hospital-due...

    Non-roster pitcher Eric Reyzelman was hospitalized due to an allergic reaction. Reyzelman, 23, was taken to a hospital in Tamoa, Florida, in an ambulance around 10 a.m. ET to assist a person with ...

  8. Allergic transfusion reaction - Wikipedia

    en.wikipedia.org/wiki/Allergic_transfusion_reaction

    An allergic transfusion reaction is when a blood transfusion results in allergic reaction. It is among the most common transfusion reactions to occur. Reported rates depend on the degree of active surveillance versus passing reporting to the blood bank. [1] [2] Overall, they are estimated to complicate up to 3% of all transfusions. [3]

  9. Type I hypersensitivity - Wikipedia

    en.wikipedia.org/wiki/Type_I_hypersensitivity

    Type I hypersensitivity (or immediate hypersensitivity), in the Gell and Coombs classification of allergic reactions, is an allergic reaction provoked by re-exposure to a specific type of antigen referred to as an allergen. [1] Type I is distinct from type II, type III and type IV hypersensitivities. The relevance of the Gell and Coombs ...