The moment I believe I've diagnosed RSD/CRPS I refer the patient to the appropriate pain management specialist immediately.....without delay. It is not something I try to treat or manage. If you want to get involved with a lawsuit, RSD/CRPS has been one of the disorders that crosses my desk the most often when I'm asked to review a case for an attorney.
Either it wasn't recognized in a timely fashion or was not treated appropriately. Therefore, the key is recognition and appropriate TIMELY treatment. And it must be treated by someone with significant experience and in my opinion, compassion.
And to answer the second part of your question, I'm not sure if it's "reversed" or simply controlled. I have seen it well controlled when recognized and treated early.