A PREVIOUSLY healthy 38-year-old woman presented for evaluation of dizziness. She had been well until she had an episode of disorientation and disequilibrium while at work. Since then, she has had daily intermittent episodes of disorientation, lasting minutes and characterized by bilateral aural fullness and bilateral tinnitus. She has also had daily headaches ("whole head") and fatigue. She denied otalgia, otorrhea, hearing loss, vision change, nausea/vomiting, numbness, and weakness, as well as precipitating factors, alleviating factors, migraines, and trauma.