Hi welcome to the boards though I am sorry about your pain. As for the spread if it happens and to what degree depends so much on each person. Also if the condition gets worse or better. I know a few people who theres have gotten much better where one girl in particular went from years in a wheel chair to now being active. She had to go through a lot of treatments. I think so much is finding the right treatment which is different from person to person. It is really good you are treating this asap. For me and this is so much easier said then done but I try to stay in the day and not think about the what if's of the future with this condition. I tend to have an issue where any new symptom I fear the worst and am just trying to work on not going from A to Z with my fears. Hope you get into the rsd specialist soon