For the past 3 weeks I've been having severe intracranial pressure and a floating sensation. It started with the floating sensation. Even when my eyes are closed I feel as if I'm in a plane during turbulence. I have been falling all over and cannot walk straight. Then I started getting tired after walking a short distance. I was wheelchair bound for 2 weeks because when I walked a bit, the head pressure increased and I felt like collapsing. Please can anyone give me some answers.