1 doctor weighed in:

Fluttering sensation in leg. What could it be?

1 doctor weighed in
Dr. Victor Bonuel
Internal Medicine

In brief: Isolated muscle

Twitches or fasciculations are common and usually not serious.
It could be from drinking too much coffee, stress, anxiety, electrolyte imbalance etc. However, seek medical help if it's accompanied by increasing pain, weakness, numbness, fatigue, fever, weight loss etc. http://www.livestrong.com/article/86285-causes-muscle-twitch/.

In brief: Isolated muscle

Twitches or fasciculations are common and usually not serious.
It could be from drinking too much coffee, stress, anxiety, electrolyte imbalance etc. However, seek medical help if it's accompanied by increasing pain, weakness, numbness, fatigue, fever, weight loss etc. http://www.livestrong.com/article/86285-causes-muscle-twitch/.
Dr. Victor Bonuel
Dr. Victor Bonuel
Thank
Read more answers from doctors