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[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. Those affected with dermatophagia typically bite the skin around the nails, leading to bleeding and discoloration over time.
Autophagia is 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 humans. [3]
Nail biting, also known as onychophagy or onychophagia, is an oral compulsive and unhygienic 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.
The cause of BFRBs is unknown. [citation needed] Emotional variables may have a differential impact on the expression of BFRBs. [5] Research has suggested that the urge to repetitive self-injury is similar to a body-focused repetitive behavior but others have argued that for some the condition is more akin to a substance abuse disorder ...
Biting your nails is no picnic for your teeth, either. "Constant biting can lead to poor dental occlusion," says Richard Scher, M.D., an expert in nail disorders, "so the biter's teeth shift out ...
Onychotillomania can be categorized as a body-focused repetitive behavior in the DSM-5 and is a form of skin picking, also known as excoriation disorder. It can be associated with psychiatric disorders such as depressive neurosis, delusions of infestation [ 2 ] and hypochondriasis .
Occlusal dysesthesia, or "phantom bite," is characterized by the feeling that the bite is "out of place" (occlusal dystopia) despite any apparent damage or instability to dental or oromaxillofacial structures or tissue. Phantom bite often presents in patients that have undergone otherwise routine dental procedures.
The main symptoms are pain in the hand, numbness, and tingling in the thumb, index finger, middle finger and the thumb side of the ring finger. [1] Symptoms are typically most troublesome at night. [2] Many people sleep with their wrists bent, and the ensuing symptoms may lead to awakening. [7]