I am noticing a similar shooting pain in my left hand thumb. But it occurs if and only if I fully stretch forward my left leg. Otherwise its absolutely painless. Any ideas if its related to this post? So far the doctors i've met have no clue. Orthopedist bounced me to a Neurologist and the neurologist bounced me back to the Orthopedist.
It could be restless leg, Google it and see if you have any other symptoms. As for you hand and fingers, could it be a cramp? I get cramps in my feet all the time and suffer from restless leg. It's nothing to worry about though. A lot of people have it and unless it keeps you awake at night, I wouldn't worry. Other then that, it could be Arthritis but you would need a doctor to assess for other things before diagnosis. Does anything relieve the pain?