Benign Paroxysmal Positional Vertigo, or BPPV, is a common inner ear disorder that causes brief episodes of dizziness. It occurs when tiny calcium crystals, called otoconia, become dislodged from their usual position in the utricle and move into one of the semicircular canals. This misplacement disrupts the normal fluid movement in the canals, leading to a false sense of spinning or vertigo when the head is moved. Symptoms of BPPV are often triggered by specific head movements, such as tilting the head back or rolling over in bed. While the episodes can be unsettling, BPPV is generally considered harmless and can often be treated effectively with simple maneuvers, such as the Epley maneuver, which helps reposition the dislodged crystals back to their original location.