Unilateral Utricular Dysfunction Presenting as Disorientation while Driving
TL, a pleasant 43-year-old female presented with a 10-month history of a very specific sensation of tilting only during high velocity turns and only when veering leftward. She had no precipitating episode of vertigo, nausea, vomiting, nor any tinnitus or change in hearing. She stated she had to pull over while driving because she felt she would roll the car or fly off the highway. TL also reported she had tried diazepam and meclizine neither of which was beneficial. TL stated she was at a point where she was not comfortable driving on highways requiring higher speeds and these specific kinds of turns. TL presented with results of previous tests that included magnetic resonance imaging (MRI), lab work, audiometry, auditory brainstem response (ABR), and videonystagmography (VNG).