2nd MVD

I have MVD on Aug. 2nd and got pain relief for 3 weeks. Then the pain came back. Long story short, after upping my Neurontin to the max., my NS said that he needs to do another MVD to explore the area further since my pain is increasing at a rate that I can't keep up with. The burning, electricity, stabbing, boring has gotten unmanagable. Who has had a 2nd MVD and what were your results? My NS says that it is ATN now. He also told me when I was in the hospital that sometimes there is a problem with the nerve further into the brain. I totally trust this NS and he has lots of experience with treating TN. Thoughts?