Nerve Block for ATN

My PM dr is pushing the nerve block for my atn, also as a diagnostic tool. I am scared of it, but more sick of pain and meds and all that goes along with it. Has anyone with atn had the nerve block and did it work for you and for how long? Did you still need so many meds...pain meds, anti-seizure meds, muscle relaxers, etc?? Any experience, suggestions, help would be VERY, VERY, appreciated!! My pain is nuts, there's not much I can count on with it as far as exact triggers or where it's going to hurt. Please help!

put nerve block in the search box?

have you tried anything topical?

are you a candidate for MVD?