See Teri's answer to my similar question... http://www.healthcentral.com/migraine/c/question/998022/47943
I am seeing a new pain mgmt doc, today for possible IV TX...like Lidocaine. I'll let you know what happens. I have also stopped all pain meds thinking it was rebound but without avail...but read it can take many months. The IV meds to stop the cycle sound hopeful. My old neuro blew me off about them or finding any help at all but finding this website gives me some hope, again.