I just had this happen to me as well. My eye on my cluster side was tender to the touch and it hurt when I blinked and the outside corner was red. I believe it may have been an internal sty as it never showed up on my upper or lower lid and went away in about a week.
Sure seems plausible that it would cause some sort of damage... I know when I had my last MRI it said something about a T2 something or another and when I asked my neurologist he mentioned it being a small white mass that was basically scar tissue he said it wasent of concern unless I had more show up down the road and that it was common in both CHRs and migrainers.... So to me that seems like damage idk...
Agreed! It does affect memory in my experience. So I wind up taking those pills for old folks to help with memory. They seem to help or the placebo effect is working!!!
I'm old, so either way is just fine. Help is help!