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Excoriation disorder, more commonly known as dermatillomania, is a mental disorder on the obsessive–compulsive spectrum that is characterized by the repeated urge or impulse to pick at one's own skin, to the extent that either psychological or physical damage is caused.
When the full thickness of the epithelium is penetrated (ulceration), the lesion becomes covered with a fibrinous exudate and takes on a yellow-grey color. Because an ulcer is a breach of the normal lining, when seen in cross section, the lesion is a crater.
Excoriation: A punctate or linear abrasion produced by mechanical means (often scratching), usually involving only the epidermis, but commonly reaching the papillary dermis. Ulcer: An ulcer is a discontinuity of the skin exhibiting complete loss of the epidermis and often portions of the dermis.
The skin may become thickened and hyperpigmented (lichenified) as a direct result of chronic excoriation. Typically this period of increased scratching is associated with stressors. Causes. This is a skin disorder characterized by a self-perpetuating scratch-itch cycle:
Pathophysiology. Chronic and repetitive scratching, picking, or rubbing of the nodules may result in permanent changes to the skin, including nodular lichenification, hyperkeratosis, hyperpigmentation, and skin thickening. Unhealed, excoriated lesions are often scaly, crusted or scabbed.
Excoriation – In common with Abrasion, this is caused by mechanical destruction of the skin, although it usually has an underlying medical cause. Hematoma – Caused by damage to a blood vessel that in turn causes blood to collect in an enclosed area.
Another disorder, known as excoriation disorder, the repetitive action of uncontrollably picking at one's skin, can sometimes accompany dermatophagia. Dermatophagia differs from excoriation disorder in that the repetitive motion affected persons partake in is the biting of the skin.
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The most common cause of periwound issues is excessive moisture present in the area surrounding the wound. Exudate from heavily draining wounds causes irritation of the periwound that may lead to maceration, excoriation, and otherwise compromise skin integrity.
Cause. Cholestasis means "the slowing or stopping of bile flow" which can be caused by any number of diseases of the liver (which produces the bile), the gallbladder (which stores the bile), or biliary tract (also known