Twitching

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
• Anxiety
• Benign fasciculation syndrome
• Caffeine
• Drugs: Pergolide
• Epilepsy
• Fatigue
• Parkinson’s disease
• Pinched nerve or other nerve injury
• Stimulant abuse

• Stress

• Fasciculation
• tic (a similar but more voluntary action)

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