Yes - sounds like RSI, back off on the keyboard use, check out the wrist supports suggested by das_stig, make sure your chair / desk / posture are good, take 10 minute breaks every hour and stop when the pain starts. RSI can lead to permanent damage and pain if you ignore it, be careful.
I would also consider getting a good-quality external keyboard if you don't already use one, laptop keyboards are not really designed with ergonomics in mind.
On a separate note - posting 'Wrist Pain' in the Max OS forum on Toms? Sir, you have some guts!