I was involved in a neuro stimulator study a few years ago and it was a wonderful thing. This was to help migraines in the back of the head. Yes, this involves surgery. It not only helped the migraines in the back of my head I almost never get a migraine in the back anymore. I still have chronic migraines in the front, but the back is amazing! If they develop one of these for the front they can shave my head and implant this today. Nothing else have ever helped my pain levels. It is worth looking in to.