Persistent postural-perceptual dizziness is a type of chronic dizziness that has just been named in recent years by the International Classification of Vestibular Disorders Committee. It is a functional dizziness that is neither structural nor psychogenic. It is characterized clinically by chronic, more than three months of dizziness, lightheadedness, and a feeling of grogginess, and patients often describe a feeling of unsteady walking and drifting, all for three months or longer. Patients are commonly 40-50 years old and typically present with sensitivity to movement and high sensitivity to visual stimuli, which can be relieved by lying down or resting. Most patients may have a combination of anxiety or depression on clinical examination and often have a neurotic personality, but vestibular function is mostly normal and cranial imaging does not show large vessel stenosis or occlusion. This is the diagnostic point for persistent postural-perceptual dizziness.