I also feel really tired a lot also. Even when I have slept quite a lot, I still don't wake up feeling refreshed and always feel drowsey and not ready to start the day. I mentioned it to my Pain Management Doctor and he told me that he thinks (however he cannot be certain due to the RSD/CRPS) that I also have Fibromyalgia, which causes fatigue and other symptoms.

If your doctor hasn't mentioned Fibro to you before, I would look up the symptoms and mention it to your doctor and see what he/she says. I read an article on the internet that said that most people with RSD, also suffer from Fibro so it could be possible that that is what you are experiencing.

Take care and I hope you feel better real soon - please keep us updated when you can.