benign paroxysmal positional vertigo

What causes sudden severe dizziness when turning over in bed?

1. Introduction Sudden severe dizziness when turning over in bed is most frequently caused by benign paroxysmal positional vertigo. This common condition occurs when microscopic calcium crystals become dislodged and migrate into the fluid-filled semicircular canals of the inner ear, sending false movement signals to the brain during specific head position changes. Experiencing a sudden, … Read more

What Causes Dizziness When Rolling Over in Bed?

1. Introduction Dizziness when rolling over in bed is most frequently caused by benign paroxysmal positional vertigo, a mechanical disorder of the inner ear. Microscopic calcium crystals become dislodged from their proper anatomical location and migrate into the semicircular canals. When the head changes position, these loose crystals shift, creating abnormal fluid currents that send … Read more