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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.
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. Due to limited medical research which differentiates autophagia from typical nail biting practices, the causes of autophagia remain broad.
Excoriation disorder; Other names: Dermatillomania, skinning disorder, neurotic excoriation, acne excoriee, pathologic skin picking (PSP), compulsive skin picking (CSP), psychogenic excoriation: Sores as a result of skin picking on arms, shoulders and chest: Specialty
Causes. Causes of formication include normal states such as onset of menopause (i.e. hormone withdrawal). Other causes are medical conditions such as pesticide exposure, mercury poisoning, diabetic neuropathy, skin cancer, syphilis, Lyme disease, hypocalcaemia, or herpes zoster (shingles) and neurocysticercosis.
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.
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.
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.
Psychiatry, dermatology. Delusional parasitosis (DP) is a mental disorder in which individuals have a persistent belief that they are infested with living or nonliving pathogens such as parasites, insects, or bugs, when no such infestation is present. They usually report tactile hallucinations known as formication, a sensation resembling ...
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.
picking at skin, as either a sign of PMA or even progressing to a disorder (excoriation disorder) tapping fingers; tapping feet; starting and stopping tasks abruptly; talking very quickly; moving objects around for no reason; taking off clothes then putting them back on; Causes. Causes include: Schizophrenia; Bipolar disorder