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Xeroderma occurs most commonly on the scalp, lower legs, arms, hands, knuckles, the sides of the abdomen, and thighs. Symptoms most associated with xeroderma are such skin conditions as scaling (the visible peeling of the outer skin layer), itching , and skin fissures (cracked skin).
Constant knuckle cracking may also be considered a compulsive body-focused repetitive behavior by mental health professionals. “If you’re finding that you need to crack your knuckles often ...
There are a variety of conditions that cause itching and skin picking including: eczema, psoriasis, diabetes, liver disease, Hodgkin's disease, polycythemia vera, systemic lupus, and Prader–Willi syndrome. [3] In order to better understand excoriation disorder, researchers have developed a variety of scales to categorize skin-picking behavior.
The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems. However, this is not supported by medical research. [2] [3] The cracking mechanism and the resulting sound is caused by dissolved gas (nitrogen gas) cavitation bubbles suddenly collapsing inside the joints. This happens when the joint ...
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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.
Left hand itching Most sensations in the body don't occur by accident. Typically, the body is trying to communicate something deeper to us—whether that be an underlying medical condition or an ...
As the condition becomes more severe, the whole finger down to the knuckles may become white. Feeling may also be lost. Fingers change colour (blood vessels affected): With continued exposure the person may experience periodic attacks in which the fingers change colour when exposed to the cold. Initially the fingers rapidly become pale and ...