Hi there. I'm sorry to hear about your husbands struggle. I have recently been diagnosed with RSD myself(atleast by one dr). I had carpal tunnel surgery on both hands last summer and as of now, the pain is worse and starting to spread. My question is, how did they make a definitive diagnosis of RSD? Was he sent to a pain specialist or a rheumatologist? The pain specialist I saw said that symptomatically I have RSD, but the clinical exam was inconclusive.