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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.
Dupuytren's contracture (also called Dupuytren's disease, Morbus Dupuytren, Viking disease, palmar fibromatosis and Celtic hand) is a condition in which one or more fingers become permanently bent in a flexed position. [ 2] It is named after Guillaume Dupuytren, who first described the underlying mechanism of action, followed by the first ...
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]
Those affected have a nearly normal life expectancy. [6] AS affects 1 in 12,000 to 20,000 people. [6] Males and females are affected with equal frequency. [7] It is named after British pediatrician Harry Angelman, who first described the syndrome in 1965. [7] [9] An older term, happy puppet syndrome, is generally considered pejorative. [10]
1 in 5,000–10,000 [ 4] Marfan syndrome ( MFS) is a multi-systemic genetic disorder that affects the connective tissue. [ 6][ 7][ 1] Those with the condition tend to be tall and thin, with long arms, legs, fingers, and toes. [ 1] They also typically have exceptionally flexible joints and abnormally curved spines. [ 1]
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]
Frequency. 1 in 5,000 [ 1] Ehlers–Danlos syndromes ( EDS) are a group of 13 genetic connective-tissue disorders. [ 7] Symptoms often include loose joints, joint pain, stretchy velvety skin, and abnormal scar formation. [ 1] These may be noticed at birth or in early childhood. [ 3]
Congenital contractural arachnodactyly ( CCA ), also known as Beals–Hecht syndrome, is a rare autosomal dominant congenital connective tissue disorder. [ 1] As with Marfan syndrome, people with CCA typically have an arm span that is greater than their height and very long fingers and toes. [ 2] However, Beals and Hecht discovered in 1972 that ...