There is a very strong possibility that the surgeries have caused it to spread. Yes it is definetly possible for the RSD to be different in Different pats of the body, remember you only need 3 of the 4 main syptoms to have RSD and these can change over time When mine spread from the hand upto the elbow it was different, no swelling but vastly increased hair growth and ytpersensitivity When it started in the legs the pain feels different and lots of skin peeling off