Clinical Characteristics of Patients with High Scores on the Niigata PPPD Questionnaire but Were Not Diagnosed as Having Persistent Postural-Perceptual Dizziness

Persistent Postural-Perceptual Dizziness (PPPD) is a chronic functional vestibular disorder characterized by exacerbation of symptoms by standing, movements, and/or visual stimulation. The Niigata PPPD Questionnaire (NPQ) is an effective screening tool for identifying PPPD, typically with a score of 27 or higher. However, NPQ scores of 27 or more can also occur in diseases other than PPPD.