Hello,
I have had auras without head pain but do have severe head pressure with some pain. They have occurred individually on a year or two year apart basis. Recently they have become more frequent. Just recently my Optometrist said I would need surgery for glaucoma by my next visit next year.
My 1st post @pfrjr78 and am 78
Thanks, Paul

It’s not related to the eye. I’ve been getting this since I was around 20, and I’m nearly 60 now.

I believe sodium nitrate and sodium nitrite, which are preservatives found in fast foods and cold cuts can cause the blood vessels in the brain to temporarily constrict. Taking aspirin everyday can prevent this. Or taking either aspirin or any other NSAID as soon as the event begins will stop it right away.