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Self-harm behaviours, including biting, hitting, head banging, and skin picking, are very common. Behavioral complications in Smith-Magenis syndrome are thought to be worsened by issues with sleeping. Repetitive self-hugging is a behavioral trait that may be unique to Smith–Magenis syndrome. People with this condition may also compulsively ...
Many species of arthropods (insects, arachnids, millipedes and centipedes) can bite or sting human beings. These bites and stings generally occur as a defense mechanism or during normal arthropod feeding. While most cases cause self-limited irritation, medically relevant complications include envenomation, allergic reactions, and transmission ...
Formication. Formication is the sensation resembling that of small insects crawling on (or under) the skin, in the absence of actual insects. It is one specific form of a set of sensations known as paresthesias, which also include the more common prickling, tingling sensation known as pins and needles. Formication is a well-documented symptom ...
Trichophagia is a form of disordered eating in which persons with the disorder suck on, chew, swallow, or otherwise eat hair. [1] The term is derived from ancient Greek θρίξ, thrix ("hair") and φαγεῖν, phagein ("to eat"). [2] Tricho- phagy refers only to the chewing of hair, whereas tricho- phagia is ingestion of hair, but many texts ...
Cheilitis is a medical condition characterized by inflammation of the lips. The inflammation may include the perioral skin (the skin around the mouth), the vermilion border, or the labial mucosa. [1] The skin and the vermilion border are more commonly involved, as the mucosa is less affected by inflammatory and allergic reactions.
Nose picking is the act of extracting nasal mucus with one's finger ( rhinotillexis) and may include the subsequent ingestion of the extracted mucus ( mucophagy ). [1] In Western cultures, this act is generally considered to be socially deviant; [2] parents and pediatricians have historically tried to prevent development of the habit and ...
Pica is the eating or craving of things that are not food. [2] It is classified as an eating disorder but can also be the result of an existing mental disorder. [3] The ingested or craved substance may be biological, natural or manmade. The term was drawn directly from the medieval Latin word for magpie, a bird subject to much folklore ...
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 ...