OK, last year I started getting cramp in my right hand during the day which I attributed to using a mouse a lot (IT Support job) as it went away at weekends. I changed to a trackball and it got better to the point where it basically went away. Recently though its come back. I'm still using a trackball at work and over the last few days its got that bad I've taken to trying to use my left hand instead which is interesting. I've looked up carpal tunnel but this seems to be numbness/tingling in the figures where all I have is a constant dull pain in the ball of my hand at the base of the thumb, which hurts when touched and stops me bending my thumb back too much. Does anyone else have similar problems and if so how do you manage? I'm thinking of scrapping my Mighty Mouse at home in case this isnt helping either. Thx.