Acute, rapid onset of severe vertigo with nausea/vomiting and gait instability
Nystagmus
Unilateral, horizontal or horizontal-torsional that is suppressed with visual fixation
Does not change direction with gaze
Unlike BPPV and Meniere lasts several days and does not recur
Unilateral, horizontal or horizontal-torsional that is suppressed with visual fixation
Does not change direction with gaze
Vestibular neuritis
Cerebellum lesion
Labyrinthitis
Nystagmus
Benign paroxysmal positional vertigo
Not suppressed with visual fixation
Optic neuritis
May be other than horizontal or horizontal-torsional