BAsic information description A common, inner ear disorder that causes dizziness or vertigo with certain movements of the head. Benign means "not very serious". Paroxysmal means "sudden and unpredictable in onset". Positional, because it comes about with a change in head position. Vertigo, causing a sense of the room spinning or whirling. frequent signs and symptoms A sensation of dizziness or vertigo (spinning). Vertigo begins 5 to 10 seconds after the head moves and lasts...