Hi,
Welcome to the forum. I am sorry to hear about your lose's. I personally do not recommend a brace, this to can make your rsd worse. As far as meds. there is lots of them to try so don't give up just keep telling your dr. what is and isn't working. many of us are on a combination and see a combination of dr.'s.

I personally, had many lsb's (lumbar sympathitic blocks) in fact I had them periodically for 2 years. The last set was one week apart and they seem to really help. I got off my rollabout and everything. Although I didn't find a job and my rsd is starting to get worse again. i had a few months with minimal pain which was awesome and gave me renewed hope.
With this in mind, don't give up.