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  2. 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 ...

  3. These Pictures Will Help You Identify the Most Common ... - AOL

    www.aol.com/pictures-help-identify-most-common...

    Other symptoms to note: Contact dermatitis appears following exposure to an irritant or allergen, and it’s the most common rash caused by external factors, Dr. Zeichner says. (This can include ...

  4. What are hives? A dermatologist explains

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

    Hives are quite common, though, so it’s a good idea to get familiar with them. Hives, or urticaria, are itchy pink welts that could appear anywhere on your skin. Some are bumps as small as a ...

  5. Dermatographic urticaria - Wikipedia

    en.wikipedia.org/wiki/Dermatographic_urticaria

    Symptoms are thought to be the result of histamine being released by mast cells on the surface of the skin. Despite the lack of antigens , histamine causes the skin to swell in affected areas. If the membrane that surrounds the mast cells is too weak, it will easily and rapidly break down under physical pressure, which then causes an allergic ...

  6. Cholinergic urticaria - Wikipedia

    en.wikipedia.org/wiki/Cholinergic_urticaria

    Sweat Therapy: Forced perspiration by excessive body warming (sauna, hot bath, or exercise) used daily may reduce the symptoms through exhaustion of inflammatory mediators. [7] Antihistamines: are a commonly prescribed first-line treatment for conventional urticaria, but its effectiveness in the treatment of CU is rather limited in most cases. [8]

  7. Coronavirus is causing hives and 4 other skin reactions ... - AOL

    www.aol.com/coronavirus-hives-skin-reactions...

    COVID-19 may primarily affect the lungs, but dermatologists nationwide are now reporting skin reactions as well. Here are the five most common to be aware of.