Dizziness when turning over in bed is considered to be otolithic, also known as benign positional vertigo. It is caused by the precipitation of calcium carbonate crystals in the ear, which then stimulates the ellipsoid and balloon sacs, and the patient can become dizzy when turning over, and generally due to the irritation of the ellipsoid and balloon sacs by calcium carbonate crystals, the patient becomes intolerant to turning over to the affected side. The dizziness usually lasts for a short period of time, not more than 1 minute, but causes more intense dizziness, which can be accompanied by nausea, vomiting, panic and sweating in severe cases. For otoliths, a large proportion of patients are in a state of self-healing, while a small proportion of patients have recurrent episodes and can be treated with manual repositioning. In some of the more difficult to treat patients, the calcium carbonate crystals are precipitated and stick to the ridge of the potbelly, which usually irritates the patient for a long time and causes dizziness. In most patients, otoliths can be triggered by poor rest and exertion.