Vertigo and dizziness rate among the most frequently occurring presenting complaints in neurology and in general medical practice. Since most patients do not have acute complaints at the time of examination, the clinician requires keen judgment in making a diagnosis, as patients often report confusing, real, or hypothetical causes of their problems. An improvement in the scientific understanding of vestibular physiology in recent years has led to the development of new diagnostic tests and more effective therapies. However, many of these advances have been slow to be adopted into routine...