Benign Paroxysmal Positional Vertigo (BPPV) is a common cause of vertigo, best described as a false sensation of spinning. BPPV is sudden in onset, and usually only lasts in brief spells. It is typically triggered by movements of the head or certain head positions. BPPV is a mechanical problem in the middle ear. It occurs when some of the calcium carbonate crystals (otoconia) that are normally embedded in gel in the inner ear become dislodged and migrate into one or more of t