Benign paroxysmal positional vertigo (BPPV) is a common inner ear disorder that causes brief episodes of dizziness or a spinning sensation. It occurs when tiny calcium crystals in the inner ear become dislodged and move into the semicircular canals, which are responsible for balance. This misplacement can trigger vertigo when the head is moved in certain positions. BPPV is typically triggered by specific head movements, such as tilting the head back or rolling over in bed. While it is not life-threatening, it can significantly impact daily activities. Treatment often involves specific head maneuvers, like the Epley maneuver, to reposition the crystals and alleviate symptoms.