Please note the following when you come to the clinic if you suspect otolithiasis: 1. No breakfast unless you have diabetes. 2. Regular medication should not be interrupted and should be carried with you, especially antihypertensive medication. If you have a bad heart, make sure to bring a quick-acting heart pill. 3.Control blood pressure at 120-140/70-90mmHg, too high blood pressure can not carry out the relevant examination and treatment. 4.Please bring all the previous medical records, such as head CT, head MRI, etc. 4, need to be accompanied by family members, patients themselves try not to come by car or bicycle.