You're relaxing on the sofa when suddenly your eyelid starts twitching. Or perhaps it's a muscle in your arm, your leg, or ...

Eye twitching may be a physical reaction, but many traditions view it as an intuitive or energetic signal. It reflects inner ...

Tic disorders are conditions featuring sudden, non-rhythmic movements or vocalizations. A formal tic disorder diagnosis is determined by tic frequency, duration, and type. Tics are non-rhythmic ...

Obsessive-compulsive disorder (OCD) is a mental health condition that involves repetitive thoughts and behaviors. If you have OCD, you might also experience tics or disruptive involuntary sounds or ...

Billie Eilish has Tourette's syndrome, a brain disorder characterized by repetitive and involuntary sounds and motions. The singer spoke about her tics in a recent interview with David Letterman. She ...

Group A streptococcus (GAS) infection is not associated with new-onset tic disorders in at-risk children, findings from a large prospective study show. The results mean that if pre-teens present with ...

The sudden onset of tics and tic-like behavior likely have to do with stress and certain types of social media use. Credit: martin-dm / Getty Images Every year, children and their parents seek medical ...

Infectious agents can cause muscle twitching and spasms, too. The most commonly known is probably tetanus, which causes a phenomenon called lockjaw, where the neck and jaw muscles contract to the ...