BENIGN PAROXYSMAL POSITIONAL VERTIGO Benign paroxysmal positional vertigo is the most common cause (20–40%) of peripheral vertigo. Age of onset 11–84 years; mean age of onset fourth to fifth decades. Incidence increases with age.Slightly increased incidence in females. CAUSES Most common are closed head injury and vestibular neuronitis (vertigo lasting days) Infections Old age