Dizziness that occurs when the head is moved is considered to be caused by otolithiasis, also known as benign paroxysmal positional vertigo. It is caused by the dislodgement of otolith particles in the balance receptors, and when the position of the head changes, the lymphatic fluid in the inner ear swims and irritates the cell membrane of the semicircular canal, causing a brief vertigo with rotating vision and even nausea and vomiting in severe cases. The vertigo is most often seen in a fixed position and lasts no more than a minute, and rotational fluttering of the eyes can be observed during the vertigo attack. If the patient does not tolerate the treatment of manual repositioning, it is possible to inject finasteride first to reduce the dizziness and vomiting symptoms, and then perform the treatment of manual repositioning.