Vertigo that does not deviate to one side without rotation refers to vertigo caused by systemic diseases such as cardiovascular diseases (cardiovascular diseases are also called circulatory diseases, which are a series of diseases involving the circulatory system. The circulatory system refers to the organs and tissues that carry blood in the human body, mainly including the heart and blood vessels. There are many causes of vertigo, which can be minor or even physiological, but can also be a manifestation of a serious disease, so the patient should not take it lightly and must give a detailed history of the disease and the specific episodes, and must also undergo a series of tests to clarify the cause of vertigo. Vertigo is often accompanied by balance disorders, unsteadiness, nystagmus, deflection and tilting of objects, nausea, vomiting, pallor, sweating, change of pulse and blood pressure, and other signs of autonomic dysfunction, which are called true vertigo and are caused by lesions of the vestibular nervous system. The vertigo that does not deviate to one side and does not rotate refers to vertigo caused by systemic diseases, such as cardiovascular disease, cerebrovascular disease, anemia, uremia, drug intoxication, endocrine disease and neurosis.