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  2. What are hives? A dermatologist explains

    www.aol.com/hives-dermatologist-explains...

    It’s true that breaking out in hives is an uncomfortable experience, but hives are temporary. “For most people who have hives, the episode will end, and their skin will be better within a few ...

  3. Hives - Wikipedia

    en.wikipedia.org/wiki/Hives

    Hives, or urticaria, is a form of skin rash with red, raised, itchy bumps. [1] They may also burn or sting. [2] Hives can appear anywhere on the surface of the skin. Whether the trigger is allergic or not, a complex release of inflammatory mediators, including histamine from cutaneous mast cells, results in fluid leakage from superficial blood ...

  4. Autoimmune urticaria - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_urticaria

    Autoimmune urticaria, also known as chronic autoimmune urticaria, is a type of chronic urticaria characterized by the presence of autoantibodies in the patient's immune system that target the body's own mast cells, leading to episodes of hives (urticaria). [2] [3] This immunologically distinct type of urticaria is considered autoimmune because ...

  5. Dermatographic urticaria - Wikipedia

    en.wikipedia.org/wiki/Dermatographic_urticaria

    As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic reaction, when in fact it is the act of being scratched that causes a wheal to appear. These wheals are a subset of urticaria (hives), and appear within minutes, in some cases accompanied by itching. The first outbreak of ...

  6. Cold urticaria - Wikipedia

    en.wikipedia.org/wiki/Cold_urticaria

    Cold urticaria (essentially meaning cold hives) is a disorder in which large red welts called hives (urticaria) form on the skin after exposure to a cold stimulus. [1] The hives are usually itchy and often the hands, feet and other parts of the body will become itchy and swollen as well.

  7. Chronic spontaneous urticaria - Wikipedia

    en.wikipedia.org/wiki/Chronic_spontaneous_urticaria

    Chronic spontaneous urticaria (CSU) also known as Chronic idiopathic urticaria (CIU) is defined by the presence of wheals, angioedema, or both for more than six weeks.The most common symptoms of chronic spontaneous urticaria are angioedema and hives that are accompanied by itchiness.

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