I had the Gamma Knife treatment at the University of Alabama Medical School in Birmingham, Alabama about 3 years ago with NO success. I noticed no effect either good or bad after the procedure. I had opted for the Gamma Knife over cutting a hole in my head (MVD). I now take Lyrica, 75mg, 3 times a day and that controls my Trigeminal unless a flareup occurs then I up to four times a day. Have noticed no side effects from the Lyrica and have been on it about 18 months.