Catra gave you a good list of things you can do.
You haven't told us what caused the RSD? Have you told your employer that it is RSD?
(Btw, being self employed as I was, I Can't wait to get back to work, don't know if it'll ever happen, but one thing I do know is that the world doesn't wait for us..)
If your employer knows it's RSD, they may have checked the condition out, and learned you can make it worse, if it happened at work, they know you can follow for WC.
Are you being paid? Have you been laid off?
More details there are needed.

As Sandy, I too hope everything works out for you, and you do need to speak to an attorney, even if you pay for the consult. Get Good info.

Good Luck, and let us know as much as you can.

Pete
asb