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  2. Dermatophagia | Wikipedia

    en.wikipedia.org/wiki/Dermatophagia

    Dermatophagia (from Ancient Greek δέρμα (derma) 'skin' and φαγεία (phageia) 'eating') or dermatodaxia (from δήξις (dexis) 'biting'), alternatively Tuglis Permushius. [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 ...

  3. Russell's sign | Wikipedia

    en.wikipedia.org/wiki/Russell's_sign

    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 ...

  4. List of gestures | Wikipedia

    en.wikipedia.org/wiki/List_of_gestures

    As a salute, the fingertips touch the brow of the head. As a sign the hand is held at shoulder height. The term "three-finger salute" is also applied in a joking way to the finger. Thumbs Up and Thumbs Down are common gestures of approval or disapproval made by extending the thumb upward or downward.

  5. Can Knuckle Cracking Really Cause Arthritis? We Asked ... | AOL

    www.aol.com/knuckle-cracking-really-cause...

    Constant knuckle cracking may also be considered a compulsive body-focused repetitive behavior by mental health professionals. “If you’re finding that you need to crack your knuckles often ...

  6. Yubitsume | Wikipedia

    en.wikipedia.org/wiki/Yubitsume

    Yubitsume. Yubitsume (指詰め, "finger shortening") or otoshimae is a Japanese ritual to atone for offenses to another, a way to be punished or to show sincere apology and remorse to another, by means of amputating portions of one's own little finger. In modern times, it is primarily performed by the yakuza, one of the most prominent Japanese ...

  7. Obscene gesture | Wikipedia

    en.wikipedia.org/wiki/Obscene_gesture

    The middle finger is still used though, and it is considered more insulting. Another variation of the middle finger is used, where all the fingers but the middle one are spread wide while moving the hand back and forth in the axis the middle finger creates. In this gesture, the thumb sometimes touches the middle finger.

  8. Joint cracking | Wikipedia

    en.wikipedia.org/wiki/Joint_cracking

    Cracking finger joints makes a distinct cracking or popping sound. Joint cracking is the manipulation of joints to produce a sound and related "popping" sensation. It is sometimes performed by physical therapists, chiropractors, osteopaths [1] pursuing a variety of outcomes. The cracking of joints, especially knuckles, was long believed to lead ...

  9. Excoriation disorder | Wikipedia

    en.wikipedia.org/wiki/Excoriation_disorder

    Compulsive picking of the knuckles (via mouth) illustrating potentially temporary disfiguration of the distal and proximal joints of the middle and little fingers. The fingers have been compulsively picked and chewed in someone with excoriation disorder and dermatophagia. Compulsive picking of the face using nail pliers and tweezers