Rebecca Ellis does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Stereotypic movement disorder is a motor disorder that develops in childhood, typically before grade school, and involves repetitive, purposeless movement. Examples of stereotypic movements include ...

Mother’s thumb, or “mommy’s thumb,” is a condition that causes pain at the base of the thumb. The condition typically occurs due to repetitive hand movements or overuse of the thumb and wrist. Anyone ...

For some people, the mere sight of someone tapping their foot, twirling their hair or clicking a pen can trigger an intense sense of discomfort, or even rage. This reaction is known as "misokinesia," ...