I too had years of "rebound headaches" or so they said. I treated them with prescript
ions pain meds, and OTC, and then went cold turkey and stopped everything about
a year and half ago. Turns out I have a PFO that is causing the headaches. Yesterday I convinced my doctors to close the PFO, and thus eliminate the migraines. Have you been tested for a PFO? I was so relieved to find out that there was actually a reason I was having these headaches everyday for years, and that it wasn't "just in my head". It just took awhile to play the insurance game, try everything available first, and ruling them out. Good Luck!