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Dermatophagia (from Ancient Greek δέρμα — lit. skin and φαγεία lit. eating) or dermatodaxia (from δήξις, lit. biting) is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers.
Dermatopathia pigmentosa reticularis (DPR) is a rare, autosomal dominant [2] congenital disorder that is a form of ectodermal dysplasia. Dermatopathia pigmentosa reticularis is composed of the triad of generalized reticulate hyperpigmentation, noncicatricial alopecia, and onychodystrophy.
Other forms of pica include dermatophagia, and compulsion of eating one's own hair, which can form a hairball in the stomach. Left untreated, this can cause death due to excessive hair buildup. Self-cannibalism can be a form of self-harm and a symptom of a mental disorder.
Other body-focused repetitive behaviors include onychotillomania (nail picking), excoriation disorder (skin picking), dermatophagia (skin biting), and trichotillomania (the urge to pull out hair), and all of them tend to coexist with nail biting.
The fingers have been compulsively picked and chewed in someone with excoriation disorder and dermatophagia. Compulsive picking of the face using nail pliers and tweezers Episodes of skin picking are often preceded or accompanied by tension, anxiety, or stress. [6]
Body-focused repetitive behavior. Dermatillomania (picking of the skin) of the knuckles (via mouth), illustrating disfiguration of the distal and proximal joints of the middle and little fingers.
About 1.5 million people are infected per year, and about 290,000 people die yearly from hepatitis C–related diseases, mainly from liver cancer and cirrhosis. [4] Hepatitis C infection rates increased substantially in the 20th century due to a combination of intravenous drug abuse and the reuse of poorly sterilized medical equipment. [24]
Estimates of historical world population. Comparison of humans living today with all previous generations. This article lists current estimates of the world population in history. In summary, estimates for the progression of world population since the Late Middle Ages are in the following ranges: Year. 1400.
Official list of direct deaths. The 31 persons listed in the table below are those whose deaths the Soviet Union included in its official roster—released in the latter half of 1986—of casualties directly attributable to the disaster. [Notes 3] [4] Table: Known Deaths due to Trauma and Radiation Sickness.
I have exactly the same calluses on my knuckles from nervous chewing of my fingers - and I understand that to be dermatophagia. Perhaps that photograph could be added to this page in order to show the diversity of dermatophagia. —Preceding unsigned comment added by 123.243.199.51 12:36, 20 July 2009 (UTC)