I'm just going to add a quiet little recommendation for giving herbal remedies a try. My friend with RSD who I care for has tried at least 60 drugs and remedies (and is scathingly skeptical now), did try some arnica gel I recommended on a horrendous bruise recently. Her bruise cleared very rapidly, to her amazement. I think herbs, because they are gentle and work differently than western medication, might be more effective for some people with RSD.
DISCLAIMER This is my own completely non-scientific opinion based only on the study of herbs and herbal medicine. But at least it is offered respectfully and humbly...