I was fighting this as well. I was doing bicep curls and had to drop the weight down, and I thought what the heck is wrong with my arm??? Then I realized it was my grip that was giving me the probs, bot my arm. I am on the computer all day at work and the phone. I dial the phone with my right had as well and bwtn that and typing its always in a kind of "bent up" position. I've also recently gone back to cross stitching which is a lot of hand/wrist movement and when it really started to bother me. I find that if i take breaks during the day and GENTLY bend my wrist front and back as far as it will comfortably go and rotate it in a few circles it really seems to loosen up and get the ache out. I also just bend my fingers back from the hand joint a little to stretch them out forward and back, and my thumb as well. Has helped alot!!!
HTH,
Nan