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Those with dermatophagia typically chew the skin surrounding their fingernails and joints. They also chew on the bottom of their feet/toes, inside of their mouth, cheeks, and/or lips, causing blisters in and outside of the mouth. If the behavior is left unchecked for an extended period, calluses may start to develop where most of the biting is ...
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]
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]
Tardive dyskinesia is believed to involve the neurotransmitter dopamine. Tardive dyskinesia ( TD) is a disorder that results in involuntary repetitive body movements, which may include grimacing, sticking out the tongue or smacking the lips. [1] Additionally, there may be chorea or slow writhing movements. [1]
The full report of results from the Minnesota Starvation Experiment was published 5 years later, in 1950 in a two-volume, 1,385-page text titled The Biology of Human Starvation, University of Minnesota Press. The 50-chapter work contains an extensive analysis of the physiological and psychological data collected during the study, and a ...
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.
Psychiatry, emergency medicine. Psychomotor agitation is a symptom in various disorders and health conditions. It is characterized by unintentional and purposeless motions and restlessness, often but not always accompanied by emotional distress. Typical manifestations include pacing around, wringing of the hands, uncontrolled tongue movement ...
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 ...
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 ...
Temporomandibular joint dysfunction ( TMD, TMJD) is an umbrella term covering pain and dysfunction of the muscles of mastication (the muscles that move the jaw) and the temporomandibular joints (the joints which connect the mandible to the skull ). The most important feature is pain, followed by restricted mandibular movement, [2] and noises ...