Daniel R. Gold, DO, Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine
This is 45-year-old man who presented to the emergency department (ED) 2 days prior to this video recording with acute onset prolonged vertigo, nausea, head motion intolerance, unsteadiness and spontaneous nystagmus, consistent with the acute vestibular syndrome. Video-oculography examination in the ED demonstrated mixed left-beating and torsional (top poles beating toward left ear) nystagmus that was unidirectional (i.e., left-beating in all directions of gaze) and increased in left gaze in accordance with Alexander's law. There was no loss of hearing, video head impulse test was abnormal to the right (low gain and corrective saccades), and test of skew was normal (i.e., vertical alignment was normal with alternate cover test). Per the HINTS exam (Head Impulse, Nystagmus, Test of Skew) and in the absence of hearing loss, he was diagnosed with right-sided vestibular neuritis. He was given steroids and presented for follow-up 2 days later (the day of this recording). Nystagmus was much less intense than it had been in the ED, and symptomatically, he was much improved.
Spencer S. Eccles Health Sciences Library, University of Utah