For the past couple of days, my left hand has been twitching, at first, it just started with the thumb occasionally twitching, then when I held onto my thumb to stop it, it went to the rest of my hand, mainly the pointer, and middle finger. My elbow felt weird, like I'd hit my funny bone, but not quiet and when I press down on it, I get a tingle of nerves reacting to it, I've tried this on the other arm, and I couldn't feel any of the nerve's reaction on my right arm.