Muscle twitching is a general term for muscle contractions. Your muscles are made up of fibers that your nerves control. Stimulating or damaging a nerve can cause muscle fibers to twitch.
Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...
Medically called fasciculations, muscle twitches are “relatively common” spontaneous and rapid contractions of a select few muscle fibers, explains Christopher Fry, Ph.D. associate professor ...