Twitching, in medical terminology, refers to a type of involuntary muscle contraction. A twitch differs from a reflex eye muscle contraction in that a twitch tends to be repetitive, unwanted, lacking obvious cause, and is not considered part of the normal operation of the body.
- Amyotrophic lateral sclerosis
- Benign fasciculation syndrome
- Drugs: Pergolide
- Parkinson's disease
- Pinched nerve or other nerve injury
- Stimulant abuse