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Damaged cuticles, shortened and damaged nails, hangnails, bleeding, etc. 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.
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.
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 ...
Chalkboard scraping. Scraping a chalkboard (also known as a blackboard) with one's fingernails produces a sound and feeling which most people find extremely irritating. The basis of the innate reaction to the sound has been studied in the field of psychoacoustics (the branch of psychology concerned with the perception of sound and its ...
For people who can’t stop biting their nails or picking at their skin, a new study suggests that a simple technique could help. Body-focused repetitive behaviors — compulsively pulling or ...
Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin. The blue colour is caused by melanocytes, melanin -containing cells, that are usually located in the surface of the skin (the epidermis ), but are in the deeper region (the dermis) in the location of the spot. [ 6]
In some Arab countries, this gesture serves the same purpose and meaning of a raised middle finger. In former Persia , mainly Iran and Iraq , a gesture involving exposing only the thumb in a vertical orientation—a thumbs up —is used instead of the finger to express roughly the same sentiment – roughly equivalent in meaning to "shove it up ...
Black widow spider bites. What they look like: When a black widow spider bites, it typically causes a painful pinprick sensation. The site of the bite then swells slightly and forms a red rash ...