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OCD. 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.
Since the DSM-5 (2013), excoriation disorder is classified as "L98.1 Excoriation (skin-picking) disorder" in ICD-10; and is no longer classified in "Impulse control disorder" (f63). Excoriation disorder is defined as "repetitive and compulsive picking of skin which results in tissue damage".
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.
The ICD-10 classifies the practice as "other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence". [1] However, not all nail biting is pathological, and the difference between harmful obsession and normal behavior is not always clear. [2]
It is not the same as onychophagia, where the nails are bitten or chewed, or dermatillomania, where skin is bitten or scratched. 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.
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]
A herpetic whitlow is a herpes lesion ( whitlow ), typically on a finger or thumb, caused by the herpes simplex virus (HSV). Occasionally infection occurs on the toes or on the nail cuticle. Herpes whitlow can be caused by infection by HSV-1 or HSV-2. [1] HSV-1 whitlow is often contracted by health care workers that come in contact with the ...
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.
Arachnodactyly ("spider fingers") is a medical condition that is characterized by fingers and toes that are abnormally long and slender, in comparison to the palm of the hand and arch of the foot. In some cases, the thumbs of an individual with the condition are pulled inwards towards the palm.
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.