Muscle twitches fall into two main types. There’s myoclonus, where a whole muscle or group of muscles twitch or spasm. Then ...

At first glance, tics and body-focused repetitive behaviors (BFRBs) can look remarkably similar. Both involve repeated behaviors that may seem involuntary, often start in childhood or adolescence, and ...

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 ...

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 ...