hi doodlebug. we had a similar experience with my husband's neurosurgeon, who was horrible afterwards. the gamma knife was for the sphenopalentine nerve bundle and we found it through a pain center. as far as we know, he was the only person ever to have it for AD, at least as of last January. And it did no good whatsoever. The others who had had it successfully had atypical facial pain. if you read the Gawande article, though it makes sense as to why it would not work for AD, assuming that AD is a sensor syndrome as he calls it. Not sure if that answers your question...