For the past week I have been experiencing a very slight tingling sensation in my right hand and it can extend up to my elbow. It generally occurs when I exert pressure on this hand, whether it be by pushing or pulling. Many years ago I had a cyst removed from the backside of this hand. Could it be from that? In the past I have occassionally experienced sharp pains that have left my hand numb, but only for a few seconds. This has only occured when I have put the weight of my body on my hand, like pushing myself up or something of that nature. I guess my biggest fear is that it may be circulation related. Please advise.