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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.
Specialty. Dermatology. Psychiatry. 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. [4] [5]
Dermatillomania (picking of the skin) of the knuckles (via mouth), illustrating disfiguration of the distal and proximal joints of the middle and little fingers Body-focused repetitive behavior ( BFRB ) is an umbrella name for impulse control [1] behaviors involving compulsively damaging one's physical appearance or causing physical injury.
Onychotillomania can be categorized as a body-focused repetitive behavior in the DSM-5 and is a form of skin picking, also known as excorciation disorder. It can be associated with psychiatric disorders such as depressive neurosis, delusions of infestation and hypochondriasis. It was named by Jan Alkiewicz, a Polish dermatologist.
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. Nail biting is very common, especially amongst children. 25–35 percent of children bite ...
Lesch–Nyhan syndrome. Lesch–Nyhan syndrome ( LNS) is a rare inherited disorder caused by a deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase (HGPRT). This deficiency occurs due to mutations in the HPRT1 gene located on the X chromosome. LNS affects about 1 in 380,000 live births. [3]
Autophagia refers to the practice of biting/consuming one's body. It is a sub category of self-injurious behavior (SIB). [1] Commonly, it manifests in humans as nail biting and hair pulling. In rarer circumstances, it manifests as serious self mutilative behavior such as biting off one's fingers. [2] Autophagia affects both humans and non ...
Coffin–Lowry syndrome is an X-linked disorder resulting from loss-of-function mutations in the RPS6KA3 gene, which encodes RSK2 ( ribosomal S6 kinase 2). Multiple mutations have been identified in RPS6KA3 that can give rise to the disorder, including missense mutations, nonsense mutations, insertions and deletions.
Paronychia is an inflammation of the skin around the nail, which can occur suddenly, when it is usually due to the bacterium Staphylococcus aureus, or gradually when it is commonly caused by the fungus Candida albicans. [2] [3] [4] The term is from Greek: παρωνυχία from para 'around', onyx 'nail', and the abstract noun suffix -ia.
Leukonychia. Other names. White nails or Milk spots [1] Specialty. Dermatology. Leukonychia (or leuconychia) is a medical term for white discoloration appearing on nails. [2] It is derived from the Greek words leuko 'white' and onyx 'nail'. The most common cause is injury to the base of the nail (the matrix) where the nail is formed.