Palpitation/twitches: If one senses skipped beats or rapid beating of the heart, it could be "palpitations". If the muscles are twitching, this is called "fasciculations".
Answered 12/8/2012
5.4k views
?sleep disorder: The sensation of internal trembling may merely represent a sleep issue such as nocturnal myoclonus or even sleep apnea, but could also be a variation of a nocturnal panic reaction. Certainly not a sign of ms or parkinson's. Might need an overnight sleep study to diagnose.
Answered 12/9/2012
5.4k views
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