I am like that after almost three years. I had two brain bleeds after a TBI during a car accident. Shopping brings it on, especially a store where one must scan items visually or be moving while looking around. First, my head feels like it is twice its size, tinnitus starts, my eyes feel blurry and I begin to feel completely overwhelmed with my shoulders tightening up. Often feeling sick to my stomach. I have a complication: my neck was also broken and a bony bridge never healed. Each day some part of it is given over to dizziness, although after this long the periods of not being dizzy are increasing somewhat.