Yup. Sounds like a possible carpal tunnel thing. In my day job, I handle insurance claims and see a lot of carpal tunnel claims come across my desk. In reading the medical reports, I note that that little 'sizzle' pain that runs down the wrist CAN be C.T. *NOTE the POSSIBLE in there.* But like the others said, it could be nothing more than just a cramp in the hand.

In other words, get your doc to take a look at it and warm up your hands before you play