This has caused me so much anxiety. I wondered if ANYONE has had anything similiar? I was at a drive-thru ordering food. While my neck was turned to the side (to the speaker, when ordering) I felt the pressure change in my head as if blood was maybe being restricted. My head felt like it was pulsing and my hearing was slightly diminished. When I turned my head back straight it went away. I didn't feel dizzy or faint or anything. I know I have a very tight neck but have gotten no answers from the doctors. I have a lot of unusual head "sensations" some when my neck isn't turned. Also, I have NO sinus or allergies. Anybody out there, sound familiar?