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Dermatophagia. Dermatophagia (from Ancient Greek δέρμα — lit. skin and φαγεία lit. eating) or dermatodaxia (from δήξις, lit. biting) [3] is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers. This action can either be conscious or unconscious [4] and it is considered to be a type of pica.
Biting the fingers and lips is a definitive feature of Lesch–Nyhan syndrome; in other syndromes associated with self-injury, the behaviors usually consist of head banging and nonspecific self-mutilation, but not biting of the cheeks, lips and fingers.
Symptoms include chewing of limbs, paws and tails. In extreme cases the entire tail is consumed. Unlike humans, the causes for autophagia in rats has not yet been determined.
The main BFRB disorders are: Skin Dermatillomania (excoriation disorder), skin picking; Dermatophagia, skin nibbling; Mouth Morsicatio buccarum, cheek biting; Morsicatio labiorum, inner lip biting; Morsicatio linguarum, tongue biting; Nails Onychophagia, nail biting; Onychotillomania, nail picking; Nose Rhinotillexomania, compulsive nose ...
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. The condition generally arises from the patient's knuckles making contact with the incisor teeth during the act of inducing the gag reflex at ...
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.
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.
Onychotillomania is a compulsive behavior in which a person picks constantly at the nails or tries to tear them off. [1] It is not the same as onychophagia, where the nails are bitten or chewed, or dermatillomania, where skin is bitten or scratched.
Signs and symptoms. There is usually an itch, with generalised dry flaky thick skin of the palm of a hand. Frequently, one hand is affected, but it can be in both. If the back of the hand is affected, it may appear as reddish circles like in ringworm. Sometimes there are no symptoms.
Diabetic cheiroarthropathy, also known as Diabetic stiff hand syndrome or limited joint mobility syndrome, is a cutaneous condition characterized by waxy, thickened skin and limited joint mobility of the hands and fingers, leading to flexion contractures, a condition associated with diabetes mellitus [1] : 681 and it is observed in roughly 30% ...