I am not sure about the function of this blog and if it is to help with information or simply create a group of like diseased patients and family for support. I would like some information however about the use of calcitonin gene related protein antagonist in these migraine like events that occur and have been described after radiation therapy for AVM. the treatments thus far , personally, have been unsatisfying and there is fear in using traditional migraine agents because they can cause constriction of vessels and theoretically, at least , cause problems. I am not even sure if you continue to moderate this board as your last post was 5 years ago. If you do still participate, do you have any sources at Mayo that could help answer this question about the use of CGRP antagonists? thanks