Hi and Welcome! I have RSD and your symptons are very much like mine. Mine came from a sprained ankle though. My foot is very cold to the touch and when I take a bath it feels horrible on my foot. My foot turns purpleish blue then. I can not sleep with my foot covered up because it feels like sand paper rubbing it. I have very limited movement of my ankle and foot. I have not ever saw a nuero, just a pain doc and ortho. My pain doc did temp test and a triphase bone scan for a diagnosis. I waited a year after diagnosis to pursue treatment and now its like too late. It is full blown and theirs nothing helping now. I had the Spinal Cord Stimulator implanted and it is the only thing I get any relief with. But not to advise one as I have had a very very difficult time with mine. Multiple Surgerys. I hope if this is what you have you can get treatment in time to make a difference. Good luck on your journey and any questions feel free to ask.