I saw your post on PN too. I have both PN and RSD. For me it did not help. I do know when I posted before this was done there were some people who it did help. You may want to do a search for lidocaine infusion. Also my pain doc and who knows if this is accurate but said this infusion works better for PN type pain then RSD. That is why he felt I did not benefit from it because though I have both they think my rsd is causing more of my pain. I am not sure if I am making sense.