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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.
Signs and symptoms Compulsive picking of the knuckles (via mouth) illustrating potentially temporary disfiguration of the distal and proximal joints of the middle and little fingers. The fingers have been compulsively picked and chewed in someone with excoriation disorder and dermatophagia.
Russell's sign, named after British psychiatrist Gerald Russell, is a sign [1] defined as calluses on the knuckles [2] or back of the hand due to repeated self-induced vomiting over long periods of time.
How do you stop biting your nails? An approach called habit replacement could help nail biters quit. It could also help with skin picking and trichotillomania.
Nail biting, also known as onychophagy or onychophagia, is an oral compulsive habit of biting one's fingernails. It is sometimes described as a parafunctional activity, the common use of the mouth for an activity other than speaking, eating, or drinking.
Beginning in the second year of life, a particularly striking feature of LNS is self-mutilating behaviors, characterized by lip and finger biting. Neurological symptoms include facial grimacing, involuntary writhing, and repetitive movements of the arms and legs similar to those seen in Huntington's disease .
Darier's disease (DAR) is a rare, inherited skin disorder that presents with multiple greasy, crusting, thick brown bumps that merge into patches. It is an autosomal dominant disorder discovered by French dermatologist Ferdinand-Jean Darier.
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.
Symptoms. Common symptoms in humans include: Nail biting; Pulling hair; Chewing fingers (in extreme cases, leading to amputation) Possible causes. This section will focus on the causes for autophagia in humans. There is no single primary cause for autophagia.
Paroxysmal hand hematoma is a skin condition characterized by spontaneous focal hemorrhage into the palm or the volar surface of a finger, which results in transitory localized pain, followed by rapid swelling and localized blueish discoloration.