I wish I had an answer I also am older 60 my migraines are from a botched neck fusion that I had 6 years ago they used surgical coral and the coral caused an encapsulated infection around my vertebrae and spinal cord to the point that my neck ended up breaking in 4 places. Now I have a cervical fusion from the c2/t3 which is close to brain stem. I have always had migraines since I was a teen but after the neck thing became 100x worse. My issue is my insurance denies meds my nuerolgist prescribes it's a constant fight. I have already been put on disability because I am partially paralyzed on my left side. Now my children are grown and are having babies and I can't even hold them because they are afraid I will drop them. Don't blame them. I am doing Botox I have had 2 rounds so far I have not seen any relief. I'm tired of not being able to live I try my best to be a trooper and deal with it but how can you when your head is going to blow up, you can't see straight because of the dizziness, vomiting etc. I passed out in walmart waiting for my few pills the insurance will let me have. Luckily my 34 year old son (paramedic) was with me and knew what was going on. My best friends are an ice pack and heating pad. I have to where a neck brace all the time because even though the bone graft was a year ago dr said that if I pass out and hit my neck just right it could be bad. My dr will give me a shot of Toradol in the office and it helps for a couple days but won't write a script for the pill form. I have tried acupuncture and massage therapy, diet changes nothing. It kills me to not be able to play with my grandbabies. My daughter in law is taking me to get some kind of piercing in my ear that is suppose to help maybe it will and maybe it won't. But since they can't fix the nerve damage in my neck i hold little hope.
By the way Congrats on being a cancer survivor that is an accomplishment in itself to bad you ended up with the other crap. Best of luck if you find something that works share with me.