I’ve been experiencing similar sensations for over a year. I describe them as head rumblings, vibration with head noises. I thought I was rid of them for a few weeks and now inexplicably, they’re back- along with the fatigue that put me down for many months. But I’ve been through all the tests and everything comes up negative so this time I’m pushing myself hard to work through it this time…It’s annoying, and depressing, but many are suffering far greater maladies. Good luck to all.