I am considering going to the student disability resource center for services. I had the ergonomics person come and evaluate my office at school (I am in the no mans land of grad student: both student and staff). He said I needed to do something with my keyboard so my arms weren't up so high. But the keyboard tray is $100. The disabilty center requires that a disability be documented. I looked online to see if I could find the probability that I could get this documented and found an interesting web site, which I am posting for you.
http://www.drpodell.org/fibromyalgia-disability-evidence.shtml
It looks credible.
Sue