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  2. What are hives? A dermatologist explains

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

    Hives, or urticaria, are itchy pink welts that could appear anywhere on your skin. Some are bumps as small as a pinhead, while others may merge together to cover large patches of your skin.

  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. Dermatographic urticaria - Wikipedia

    en.wikipedia.org/wiki/Dermatographic_urticaria

    Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...

  5. 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 ...

  6. Chronic spontaneous urticaria - Wikipedia

    en.wikipedia.org/wiki/Chronic_spontaneous_urticaria

    The most common symptoms of chronic spontaneous urticaria are angioedema and hives that are accompanied by itchiness. Chronic spontaneous urticaria, despite its cause being unknown, is linked to a higher prevalence of autoimmune diseases , and is often worsened by triggers like stress, infections, certain foods, or nonsteroidal anti ...

  7. What to Know About 2024’s Flu Shot Side Effects - AOL

    www.aol.com/know-2024-flu-shot-side-202800377.html

    How to treat flu show side effects. Again, most people who have flu shot side effects only have a sore arm, if that. But some people will have things like muscle aches, headache, or flu-like symptoms.

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