I have some similar symptoms and tests sounds like some kind of neuropathy, but could be fibromalygia. Gabapentin generally has favourable reviews for fibromalygia on drugs.com. Probably not a bad move, but there is always a risk. I'm undiagnosed but can get by just about without meds so I do. Whatever it is b12 supplementation should be worth a go. It's usually worth trying a few sensible options before long term pain killers eh?