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A member asked:
What might cause one's index finger to twitch?
A doctor has provided 1 answer
Fasciculations...: Are twitches which can occur in any skeletal muscle in the body. They are usually benign. However, there are several pathological conditions associated with fasciculations which are usually accompanied by abnormalities on neurological examination and/or on a special test called electromyogram (emg). See a doctor if your symptoms are bothersome or are of concern to you.
Answered 11/28/2017
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