Why not ask if you can try Topamax? That drug relieve almost ALL the burning/tingling, etc. pain from nerve damage for me!!! It was amazing!!! Plus I have NO side effects from it either. Of course that doesn't mean that YOU won't have any side effects. LOL
Mention it to your doc. Perhaps he'll let you give it a try. It's worth it. Best of luck & God bless. Hugs, Lee