I ended up with a continuous headache (migraine like) back around 1996. I'm still being treated for it. It started for me after AD's with migraine side effects & anorexia struggles & more OD's than I can even remember on those AD meds that caused migraines. I'm healthy except for the migraine pain. I am on a med that helps & a monthly treatment with lidocaine gel on long q-tips in the nose that really helps....goes directly to the pain center of the brain (I love my old time pain specialist who remembered this migraine treatment from the old days). It usually works by the next morning if I go in with a migraine. The main treatment though is pain med in the form of a 3 day patch. They say pain meds aren't treatment for migrains but it's the only thing that ever helped mine....not the normal migraine I guess but it has the same light & smell sensitivity. No one has really figured out the cause & neck fusion I really needed didn't help like they thought it would. Oral surgery to get out all the bad teeth didn't help either.
I can so sympathize with your migraine problem