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Presentation varies from person to person. Some people have discrete attacks, which can last between 10 and 120 minutes [3] while others are symptomatic almost constantly due to atmospheric humidity levels and/or sweating. Itching most frequently occurs on the legs, arms, chest, back, and abdomen, though it can also occur elsewhere. [4]
There have been many different theories regarding the causes of excoriation disorder, including biological and environmental factors. [10]A common hypothesis is that excoriation disorder is often a coping mechanism to deal with elevated levels of turmoil, boredom, anxiety, or stress within the individual, and that the individual has an impaired stress response.
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Cold urticaria (essentially meaning cold hives) is a disorder in which large red welts called hives (urticaria) form on the skin after exposure to a cold stimulus. [1] The hives are usually itchy and often the hands, feet and other parts of the body will become itchy and swollen as well.
It is caused by lesions of the nervous system, peripheral or central, and it involves sensations, whether spontaneous or evoked, such as burning, wetness, itching, electric shock, and pins and needles. [1] Dysesthesia can include sensations in any bodily tissue, including most often the mouth, scalp, skin, or legs. [1]
People who have dermatophagia can also be prone to infection as when they bite their fingers so frequently, they make themselves vulnerable to bacteria seeping in and causing infection. Dermatophagia can be considered a "sister" disorder to trichophagia , which involves compulsively biting and eating one's hair.
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People whose disease is secondary to erythromelalgia often cannot use vasodilators for therapy, as they trigger 'flares' causing the extremities to become burning red due to too much blood supply. People with severe disease prone to ulceration or large artery thrombotic events may be prescribed aspirin.
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