I don't know about bone scans, but the qiucker you can find out if you have this, the better chance you have of stopping it. My doctor usually uses a set of two nerve blocks to diagnose RSD, but if he finds that is the case, then he doesn't perform any more unlike some docs who will just keep doing them over and over. If you don't already have a pain management doctor, they know more about this disease than most orthos or family practice doctors. Might be a good idea to see one for diagnosis and hopefully quick treatment. Good luck!