Yup. I have a compressed neck nerve that gives me vertigo thanks to just a standard helmet and mask. And I only pulled 5 Gs or so as an instructor pilot, often on two flight s day, however. Fifteen or 20 5G events a day is rough. I also got a hernia from it, but that's not the helmet's fault.
I can sympathize. My last tour was in the training command and we generally flew three ACM hops a day. It was a lot of fun but I, too, have some pinched nerves in the neck and lower back problems.
When I first went to my pain doctor, he asked, "have you had an accident or something that might have caused the problems?" When I answered, "well I was a fighter pilot for 21 years", he gave a knowing nod and said, "that could do it."
