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Dermatophagia (from Ancient Greek δέρμα — lit. skin and φαγεία lit. eating) or dermatodaxia (from δήξις, lit. biting) is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers.
Odlaug and Grant also argue that dermatillomania could have several different psychological causes, which would explain why some patients seem more likely to have symptoms of OCD, and others, of an addiction.
Often, the adjacent skin is bitten off, too, which is called perionychophagia, a special case of dermatophagia. Biting nails can lead to broken skin on the cuticle . When cuticles are improperly removed, they are susceptible to microbial and viral infections such as paronychia .
Body-focused repetitive behavior. Dermatillomania (picking of the skin) of the knuckles (via mouth), illustrating disfiguration of the distal and proximal joints of the middle and little fingers.
Children from ages 3–7 are most commonly infected with tinea capitis. Trichophyton tonsurans is the most common cause of out breaks of tinea capitis in children, and is the main cause of endothrix (inside hair) infections.
Pica may lead to intoxication in children, which can result in an impairment of both physical and mental development. In addition, it can cause surgical emergencies to address intestinal obstructions, as well as more subtle symptoms such as nutritional deficiencies and parasitosis . [5]
Autophagia. 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]
The causes of pain in children are similar to the causes in adults. Pain can be experienced in many ways and depends on the following factors in each child: Prior painful episodes or treatments; Age and developmental stage; Disease or type of trauma; Personality; Culture; Socioeconomic status; Presence of family members and family dynamics.
ῥαχίτης, meaning 'in or of the spine'), is a condition that results in weak or soft bones in children, and is caused by either dietary deficiency or genetic causes. Symptoms include bowed legs, stunted growth, bone pain, large forehead, and trouble sleeping.
Bobble-head doll syndrome is a rare neurological movement disorder in which patients, usually children around age 3, begin to bob their head and shoulders forward and back, or sometimes side-to-side, involuntarily, in a manner reminiscent of a bobblehead doll.