Right-hand-only pain is likely to be mouse-related rather than keyboard-related (assuming you mouse right-handed). Try different pointing devices and see what

Right-hand-only pain is likely to be mouse-related rather than keyboard-related (assuming you mouse right-handed). Try different pointing devices and see what feels best for you. I switched to a trackball (currently a Kensington "Expert Mouse") years ago at the first sign of pain, and haven't had any trouble with my mousing hand since. (I also use a Kinesis keyboard, and highly recommend it especially for emacs users to move the modifier keys to your thumbs)