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The water challenge test consists of application of a 35°C water compress to the upper body for 30 minutes. Water of any temperature can provoke aquagenic urticaria; however, keeping the compress at a similar temperature to that of the human body (37 °C) avoids confusion with cold urticaria or cholinergic urticaria .
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.
Swimmer's itch was known to exist as early as the 19th century, but it was not until 1928 that a biologist found that the dermatitis was caused by the larval stage of a group of flatworm parasites in the family Schistosomatidae. [7]
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The possible causes of chronic itch go way beyond dry skin. The post 11 Things Your Itchy Skin Can Reveal About Your Health appeared first on Reader's Digest.
The back, legs, arms, scalp, and genitalia are areas of the body that are commonly affected by senile pruritus. [3] According to a study, most of the people who experience pruritus daily have increased itching sensations and other associated symptoms during the night. Most studies reveal that senile pruritus is more common in men than women. [3]
Tinea cruris (TC), also known as jock itch, is a common type of contagious, superficial fungal infection of the groin and buttocks region, which occurs predominantly but not exclusively in men and in hot-humid climates. [3] [4] Typically, over the upper inner thighs, there is an intensely itchy red raised rash with a scaly well-defined curved ...
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.