If you feel that your head is spinning when you sleep, you may have paroxysmal benign positional vertigo, also known as otolithosis. When the position of the head changes, the dislodged otolith particles swim with the flow of lymphatic fluid in the inner ear, stimulating the cell membranes of the semicircular canals, and the patient experiences episodes of dizziness accompanied by a brief rotation of vision, which usually does not exceed one minute. The patient’s dizziness is very intense, and often the patient’s head is afraid to move because of dizziness. When the head position is not moved, the dizziness can be relieved quickly, but when the patient’s head is turned to a specific head position, dizziness and visual rotation may also be induced. If the patient’s dizziness and vomiting are severe and cannot tolerate the manual repositioning, the patient can be treated with inotropic fenagine to stop the dizziness and vomiting, followed by manual repositioning.