L.R.
I have the same issue after turning 50 and never having a head ache in my life, it's very intense and I've found my best relief from Asian medicine that associates the liver with eyes, i found herbs and lifestyle changes to clear heat in the liver. I eat very small meals through out the day so not to over work the liver, do a sping fast and make sure not to repress any anger....it's really helping. also its been associated with a B12 deficiency.....i do the sublingual type as they are easier to absorb. best of luck to you.