I think generalized RSD is just Centralized Pain, or pain that has spread to all the nervous systems. The symptoms are very similar. Especially the burning. I have deep core burning including in my organs at times. I found it interesting on an infrared thermography my forehead hade hyperthermia demonstrated in it. My entire forehead was white and I my entire head heats up at times, besides burning. It all spread from nerve stimulation done in PT post op foot surgery and spontaneously spread throughout my body. I live in tin buck two and I am luck I have the PM I do. I drive out of state 4.5 hrs for PM and I am prescribed oral ketamine. If it wasn't for that I would have offed myself by now. Only thing that works on burning pain, except Ativan and other sedating drugs. They do reduce my pain levels by quieting my nervous system. Some anyways. Those drugs are hard to get prescribed too. When you tell a doctor my symptoms they go straight to psychiatric solutions and drugs which don't help. I know RSD spreads body wide but many doctors don't. http://centralpainsyndromefoundation.com/