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Dermatographic urticaria is sometimes called "skin writing", as it is possible to mark deliberate patterns onto the skin. The condition manifests as an allergic-like reaction, causing a warm red wheal to appear on the skin. As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic ...
The head may be affected, but this is typically only in young children. [2] The itch is often worse at night. [2] Scratching may cause skin breakdown and an additional bacterial infection in the skin. [2] Scabies is caused by infection with the female mite Sarcoptes scabiei var. hominis, an ectoparasite. [3]
Sarcoptes is a genus of skin parasites, and part of the larger family of mites collectively known as "scab mites". They are also related to the scab mite Psoroptes, also a mite that infests the skin of domestic animals. Sarcoptic mange affects domestic animals and similar infestations in domestic fowls cause the disease known as "scaly leg".
Other symptoms to note: This condition is itchy and can cause dandruff and buildup on the scalp. It’s also common on other oily areas, like the face and chest , and can be difficult to treat. Dr.
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 skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
Sarcoptes in humans is especially severe symptomatically, and causes the condition scabies noted above. [citation needed] Another genus of mite which causing itching but rarely causes hair loss because it burrows only at the keratin level, is Cheyletiella. Various species of this genus of mite also affect a wide variety of mammals, including ...
Constant scratching causes the skin to thicken. The thickened skin itches, causing more scratching, causing more thickening. Affected area may spread rapidly through the rest of the body. Many hypothesize LSC has a psychosomatic origin. [3] Those predisposed to itch as a response to emotional tensions may be more susceptible to the itch-scratch ...