You seem to be back to the which issue is it? Stage. Back, nerve impingement or just more neuropathy! Wish I had a crystal ball? I've no answers, but I'll be pulling for you for the long run.
I truly wish that it were as simple as it being: 'animal, vegetable, or mineral'... you know what I mean!

Can I say OUCH!!!!!!! on your behalf now? Hugs for sure -'s - j