Steve ( admin ) having worked in IT since leaving school I have suffered with it once about a year ago. It lasted about a month, found these pads you can get to put in front of the keyboard are helpful ..... also make sure kefboard is far enough away from edge of the desk that you are also resting on your arms. Another trip trying raising your mouse pad about 3/4 inch of the desk, it makes you support your arm on the desk.
Alternative is to get somebody to do it for you :)