Fasciculation: Involuntary twitching of a muscle. Very common. Not to worry. If it continues for a day or two, or you find more muscles having them, you should be seen. Hope this was helpful. Dr. R
Answered 11/2/2019
3.6k views
Vein?: Unlikely. If there is a jumping sensation in your thigh it is most likely a muscle twitch, and not worrisome. Veins just don't jump.
Answered 10/17/2016
3.6k views
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