I would recommend you investigate and file for Social Security Disability Insurance (SSDI) From your description and the professional opinions, it really does sound like you qualify. You'll need a letter from a doctor (best to use the one that is most familiar with your condition and is the primary for CRPS) stating you are being treated for CRPS and in that letter, it must outline functional limitations.
Your options would be to file yourself, use a lawyer that specializes in SSDI or what I did was use a company that provides non-legal representation; even though they're not actual lawyers, the representation was excellent as all they do is represent for SSDI and I was approved on my initial application. But you do have to pay them with proceeds from your award; the amount can vary but it is capped.
There is a specific forum on SSDI within neurotalk. Here is the link.
http://neurotalk.psychcentral.com/forum28.html
And here is the link to the official website for the Social Security Administration. Lots of information in there on SSDI to educate you on the process.
http://www.ssa.gov/dibplan/index.htm
Good luck and keep us posted!