I too have PN probably from radiation I had back in 2004 and 2010 due to me tactic thyroid cancer ,(which I still have.) I'm treated at Sloan Kettering which does not care about my PN of course.
Anyway, my PN started in 2010 and has gotten progressively worse. I also had 2 back surgeries in 2009 _ and 2011 and see a pain mgmt doctor. He gives me oxcodone and Gabapentin which help .my back pain but only help the PN for 2-3 hours 4x a day. It is crazy to me (I'm 78) that there is no help for people with this condition. No $$$ in it, I guess.
Thanks for these boards which I just found. At least you ate people with compassion and possible ideas. Good luck to us all.