Thanks for responding. I did have a skin biopsy that was negative for SFN, but positive for autonomic neuropathy (sweat glands). I just had another one taken at Johns Hopkins and am waiting on results. I did take Cymbalta with Neurontin, which may have helped, but I developed a bad case of tinnitus and I wanted to see if the Cymbalta was causing it. The tinnitus did get better, so I stayed off the Cymbalta. I am now taking Elavil with the Neurontin, but I haven't noticed any difference in symptoms. I am taking 1200 to 1500 mg per day of Neurontin - how much do you take? I have been told I need to take at least 1800mg, but I get very foggy with what I am taking now. Since I haven't really noticed a decrease of my symptoms (pain keeps spreading and getting worse, I thought maybe I should stop the Neurontin since it doesn't seem to help and maybe, just maybe, it has been making it worse. Maybe that is just wishful thinking, but I thought it might be worth a try.