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  2. Hives - Wikipedia

    en.wikipedia.org/wiki/Hives

    Fewer than 5% of cases last for more than six weeks (a condition known as chronic urticaria). [2] The condition frequently recurs. [2] [4] Hives frequently occur following an infection or as a result of an allergic reaction such as to medication, insect bites, or food. [2] Psychological stress, cold temperature, or vibration may also be a trigger.

  3. Cholinergic urticaria - Wikipedia

    en.wikipedia.org/wiki/Cholinergic_urticaria

    Cholinergic urticaria typically presents with a number of small papular hives all over the body, that involve cutaneous inflammation (wheals) and severe nerve pain, which usually develops in response to exercise, bathing, staying in a heated environment, spicy foods, or emotional stress.

  4. Autoimmune urticaria - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_urticaria

    The differential diagnosis for autoimmune urticaria includes other conditions that can cause hives or similar skin reactions. [32] These can include allergic reactions, other types of urticaria such as physical urticaria (triggered by physical stimuli such as pressure, cold, or heat), and conditions such as mastocytosis and mast cell activation ...

  5. Think You Have Stress Hives? These Photos Will Help You ... - AOL

    www.aol.com/think-stress-hives-photos-help...

    “Antihistamine help to block the histamine pathway from forming new hives,” he says, adding that you can do this daily for as long as your symptoms last. “However, if your hives last longer ...

  6. 7 reasons you could be breaking out in hives and how to deal ...

    www.aol.com/news/7-reasons-could-breaking-hives...

    From stress to allergic reactions, these are some common reasons you could be breaking out in hives.

  7. 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 ...

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