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2. Aquagenic pruritus - Wikipedia

   en.wikipedia.org/wiki/Aquagenic_pruritus

   The exact mechanism of the condition is unknown. Some studies have suggested the itching occurs in response to increased fibrinolytic activity in the skin, [5] [6] inappropriate activation of the sympathetic nervous system, [7] increased activity of acetylcholinesterase, [8] [9] or an increase in mast cell degranulation that releases histamine and other chemicals into the body.

3. 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 ...

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

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

   Allergens usually cause a shiny, blistered, itchy rash, while irritants tend to cause a dry, scaly, less itchy rash. ... and the rash can spread to the entire body and usually first appears on the ...

5. Itch - Wikipedia

   en.wikipedia.org/wiki/Itch

   Pain and itch have very different behavioral response patterns. Pain elicits a withdrawal reflex, which leads to retraction and therefore a reaction trying to protect an endangered part of the body. Itch in contrast creates a scratch reflex, which draws one to the affected skin site. Itch generates stimulus of a foreign object underneath or ...

6. Woman woke up itching all over her body. It was a ... - AOL

   www.aol.com/news/woman-woke-itching-over-her...

   Woman who woke up itching all over her body was diagnosed with pancreatic cancer. Find out why itchy skin can be a symptom of the disease. Woman woke up itching all over her body.

7. Dermatographic urticaria - Wikipedia

   en.wikipedia.org/wiki/Dermatographic_urticaria

   The first outbreak of urticaria can lead to other reactions on body parts not directly stimulated, scraped, or scratched. 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.