I have had tinnitus 24 hours a day, 7 days a week for years now. When I told my ENT and internal medicine physicians about the tinnitus, their response to me was, they have it too and to learn to live with it and I have. I have also been nauseous off and on for years and no organic cause has ever been found. My GI physician once told me that in many cases, the cause of nausea is never found. A number of years ago, I was having crawling sensations on the top of my head. I ended up having a brain MRI and all was good. I was told that tension in your neck, back and shoulders can cause headaches, pressure and other odd head sensations.