I have a recommendation for you that was given to me by my orthopedist when I broke my ankle two summers ago. (My RSD started in my right arm and shoulder and has since spread and is now in my entire upper body.) He suggested that I take 500mg of Vitamin C twice daily to try to prevent the spread of the RSD into the ankle. I took it for 12 weeks on his recommendation and the RSD did not spread!! Please check with your doctor first and make sure it is okay with him/her. There are several studies out there that back up the use of Vitamin C to prevent spread after a second injury. If you want I will try to find them for you. I have continued to take the vitamin C and have not had any further spread since taking it. But again please check with your doctor first.
Cricket