For middle-aged men, if symptoms of dizziness occur, first, consider cerebrovascular accidents, such as transient ischemic attack, cerebral infarction, cerebral embolism or cerebral hemorrhage can lead to sudden onset of dizziness. Second, if the patient has a family history of diabetes mellitus or a past history of diabetes mellitus, consider dizziness due to diabetes mellitus resulting in hypoglycemic reaction or diabetic ketoacidosis, hypertonic coma, etc. For some patients with hypertension, for example, sudden transient increase in blood pressure may also have dizziness. Third, peripheral vertigo, such as Meniere’s disease, otoliths, etc. Fourth, for some cardiogenic diseases, such as coronary artery disease, unstable angina or myocarditis, congenital heart disease, these conditions can also trigger the occurrence of dizziness. Fifth, in some cases of plant nerve dysfunction, there will also be the above clinical manifestations.