Patients presenting to the emergency department (ED) with a chief complaint of dizziness require prompt assessment to rule in or out a serious diagnosis such as stroke. A retrospective chart review was performed on more than 1,500 adult patients presenting to the ED with dizziness to estimate vestibular syndrome classifications (i.e., acute, episodic, chronic) and rates of misdiagnosis. Approximately 20% of patients were diagnosed with acute vestibular syndrome (e.g., stroke) and 10% had an unclear vestibular syndrome at time of ED discharge. Of those with follow-up exams, nearly one-third received a different diagnosis, but only 3.2% received a different vestibular classification.