I was just diagnosed with this too. Actually, about 3 months ago. But I suspect mine is also from spinal disorders (fusions). My Neurologist originally diagnosed me about 3 years ago with small fiber PN which she said almost didn't show up. Sooo...because of the ongoing burning, etc., etc., etc. and a hypersensitive CNS she said she was changing it to Central Pain Syndrome. And Gramps I think you are right. I take Vicodin for other kinds of pain; I call it mechanical pain. But for the neuropathic pain I do wonder sometimes if some of this isn't hyperalgesia. And forget meds like Neurontin and Lyrica...I can't tolerate the SE's and Neurontin actually increased the burning. So, I take Klonopin which helps a great deal.