Patients who experience dizziness when lying down and when getting up first consider the possibility of positional vertigo. Positional vertigo, as the name implies, is dizziness induced by a change in position. For example, when lying down or getting up, or when turning over in bed, these changes in position cause dizziness that lasts for a short period of time, often a few seconds, usually no more than one minute. The dizziness is more intense in nature, with a spinning sensation or a horizontal swaying sensation, and some patients describe it as a sensation of booming dizziness. This kind of dizziness belongs to the treatment of neurology, and it is recommended to visit the neurology clinic to improve the position test to clarify the diagnosis. After the diagnosis is made, the patient should be treated with manual repositioning. If necessary, a cranial magnetic resonance examination should be performed to rule out other diseases, such as a tumor in the fourth ventricle.