ENG, sinusoidal vertical-axis rotation, and otoacoustic emissions testing in a man whose disabling dizziness had culminated in forced retirement

A 51-year-old ex-policeman presented with a considerable history of vestibular symptoms. Four years earlier, he had awoken in the middle of the night with rotary vertigo, nausea, and vomiting. For the next 2 weeks, these symptoms occurred on and off with varying severity; between episodes of rotary vertigo, he would experience nausea and dizziness, although these recurrent symptoms were less severe than those at the onset.