I have PA (diagnosed last June) and I use hydroxocobalamin 2 times a week. Of all the symptoms I had, only a chronic tiredness and a strong burning in my feet and legs remain. I have already used Lyrica, cymbalta and for the last month I have taken gabapentin + amitriptyline with a slight improvement in the burning feeling.
A podiatrist friend suggested that I wrap my legs with Opsite or Fixomul, a procedure she does with her patients with peripheral neuropathy. Searching a little about this on the internet, I found the article below and bought compressive stockings (3/4 Venosan ultraline 4000) and used them continuously in the last 2 days and Voilá! the burning has disappeared! Of course it's anecdotal and I just "cheated" my nerves by altering the type of sensation, but I was able to sleep better and I'm even thinking about reducing the dose of gabapentin.
So for those who have this desperate burning in their feet, I think they should try these socks ...