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A member asked:
Whats the cause of muscle twitching very often during the day for the last 4 days in my left upper arm?
A doctor has provided 1 answer
It depends: Involuntary muscle twitching can be caused by electrolyte imbalances (low potassium, for example); overuse (fatigue), some neurological conditions (writer's cramp among other things) dehydration, and even some medications or discontinuation of medication. If it continues and is a concern see your pcp for a more thorough history and examination.
Answered 10/6/2018
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