Hello LC 31,
Alot of your symptoms sound a whole lot like mine. I also have head pressure that is worse when lying down. I also have constant pulsating tinnitus (sound in the ear) My head pressure is constant but worse lying down. I am lucky so far as I do not have the dizzyness. I too have been through all the tests and also an MRA of my brain. Which all have been normal. I am calling my neuro again today. I also wake up with burning, numbness, tingling that is almost always in my head, ears, face neck, shoulders and down to my chest. It starts to go away when I get up. I also have swelling in the hunch back area and a very stiff, sore neck and back.
I sure hope you find out what is wrong. My doctor suggested the Mayo Clinic, but I am not ready to do that yet. I am seriously considering seeing a lyme literate doctor as I am not convinced I do not have Lyme Disease. All of my symptoms and your also are symptoms of lyme. I am from Michigan and was up in the Upper Peninsula when I found 2 ticks on me. That was 5 years ago. I wondered if maybe lyme could be a possibility for you.