Greetings, Safierdrgn, from Canada! I came across your post and felt compelled to respond to you.
I too have experienced this Neuropathic Pain since 2004. It has only increased in intensity and has become more frequent over the years. The drug(s) mentioned in your post and others' replies I haven't even heard-of before. I've tried all the pharmaceuticals prescribed to me over the years (such as Lyrica, Nabilone). I was sent to a Pain Clinic and was even prescribed Methadone! Did nothing but make me sick to my stomach and I could still feel the pain. The only medication I have tried that helps is Hydromorphone (which is Dilaudid). My system can't handle too much and I only take 3 mg when a flare begins. Also, I find medicinal marijuana to be about 60-70% helpful. Yes, I know it's different in Canada when it comes to drugs and the health industry. I have also noticed that elevating the body part that is in pain does help ... but who wants to just lay there, right? I'm a firm believer that addiction to anything comes down to what you're using it for. One of the best books I have found is called Healing Multiple Sclerosis (by Ann Boroch). She has MS quite bad and turned herself into a Naturalpath.
Anyhow, just wanted to share my own experience and let you know that I can relate to some of what you're saying. To this day, the only explanation of my pain was best described by a Neurologist when he said in a letter, "It's like a balloon inside inflating and deflating". Because, to me, it feels like someone is inside pushing all my veins and muscles as far as they can go until it's unbearable then it's released... then pushed etc. etc.
I really hope something I've said here might help you a little bit. Take good care of yourself and try not to be hard on yourself either.