While I was playing violin (around winter 2008) my left hand (that I use to hold up the violin) developed an interesting injury. The side of the palm where the pinky is (the whole side), tensed up. It went away after a while. Then recently while playing piano it started to come back. Whenever I'd play octaves, then whenever I'd use the pinky at all. Is there a name for this? Prevention?Note: the pinky itself is not affected it is the area below the pinky that is affected.