I've had carpal tunnel syndrome, but it was a result of excess IV fluid infusion after an accident rather than from repetitive stress/strain. In my case, it got better a little on its own, and a cortisone injection pretty much fixed it.

One strange advantage of having had this injury is that I can tell the difference between carpal tunnel-like pain and other sorts of muscle fatigue. So, I can feel that I've been over-doing it with, say, a laptop keyboard and take corrective action.

For me, the Microsoft "natural" series keyboards have been a huge benefit. If I use a regular keyboard for more than a few days in a row, I start to feel wrist pain.

Another commenter suggested seeing a physical therapist. At least in the US, you might be better served seeing an occupational therapist who specializes in hand/wrist injuries. My wife is a PT, and her education did not include any special training on repetitive stress injuries.

However, as suggested by this same poster, your first stop ought to be a physician who actually gives a damn. You might call a hand surgeon's office and which physicians tend to send RSI referrals and then make an appointment with one of them.

Now, I'm on to picking out a good chair...