Recently I developed similar symptoms and was going crazy. A naturopath gave me a shot with B vitamins and within a day the allodynia had gone away. I already knew I have autoimmune pernicious anemia and get a shot of B12 once a month, but the combination of B vitamins may have been the ticket. He assured me I would feel better but I did not believe him. Worth a shot. It was a naturopath who discovered the pernicious anemia after I'd been to many other doctors. Best of luck as it is miserable.