Hand cramps ;-(
Hand cramps is a result when our muscles and nerves are being affected for some conditions, one simple reason is fatigue from overuse.
At work, this is one of my problem. Since I'm using mouse, my right hand, almost everyday suffering from hand cramps, though not that severe still I feel the pain. Stress ball give a little relief and sometimes I tried to work with my left hand to get a rest with my right, but no good, I'm working as if I don't have deadline.