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  2. Dermatographic urticaria - Wikipedia

    en.wikipedia.org/wiki/Dermatographic_urticaria

    In a normal case, the swelling will decrease without treatment within 15–30 minutes, but, in extreme cases, itchy red welts may last anywhere from a few hours to days. In some cases, welts are accompanied with a painful burning sensation. [3] This calls for more urgent treatment as the condition can impact on the patient's quality of life.

  3. What are hives? A dermatologist explains

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

    The link between hives and stress is strongest for people who have autoimmune conditions or have other allergy issues and are predisposed to getting hives. But, let's be honest, it can be ...

  4. Physical urticaria - Wikipedia

    en.wikipedia.org/wiki/Physical_urticaria

    Physical urticaria is a distinct subgroup of urticaria (hives) that are induced by an exogenous physical stimulus rather than occurring spontaneously. [1] There are seven subcategories that are recognized as independent diseases. [2] [3] Physical urticaria is known to be painful, itchy and physically unappealing; it can recur for months to ...

  5. 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 ...

  6. Cholinergic urticaria - Wikipedia

    en.wikipedia.org/wiki/Cholinergic_urticaria

    Cholinergic urticaria may significantly impair quality of life, especially in relation to normal day to day activities. It is caused by an overreaction of the immune system to the release of histamine, mast cells, and other chemicals in response to the small nerve fibers throughout the body due to the increase in body temperature being allergic ...

  7. 16 Ways to Get Rid of Hives, According to Doctors - AOL

    www.aol.com/lifestyle/16-ways-rid-hives...

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  8. Cold urticaria - Wikipedia

    en.wikipedia.org/wiki/Cold_urticaria

    Swimming: Swimming can be especially dangerous, as the rapid heart rate combined with the onset of hives can lead to hypotension, shock, and drowning. Sweat: A reaction may even occur on a warm day or coming out of a sauna when there is sweat on the skin, since the reaction is triggered by skin temperature, not core temperature. If there is a ...

  9. Aquagenic urticaria - Wikipedia

    en.wikipedia.org/wiki/Aquagenic_urticaria

    The hives associated with aquagenic urticaria are typically small (approximately 1–3 mm), red- or skin-colored welts (called wheals) with clearly defined edges. It most commonly develops on the neck, upper trunk and arms, although it can occur anywhere on the body. Once the water source is removed, the rash generally fades within 30 to 60 ...

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