I have suffered from TN on the left side for about 4 years after adental procedure. About 3 years ago I had the Gamma Knife surgery at the University of Alabama at Birmingham Medical Center. The Gamma Knife was no help either positive or negative. Since then I have been on neurotin, baklophen and now on Lyrica. I used to have a flareup about 1 week every 3-4 months with the TN under control the rest of the time. I am now into the 4th week without break of a flareup and am considering having a Balloon Percutaneous Rhizotomy and would like to hear from others that have had this procedure. What were the after effects and did it work? Would you do it again? Please respond.