Dizziness and nausea are not necessarily cerebral infarction, but they cannot be ruled out either. It is mostly due to insufficient blood supply to the brain, due to the symptoms of ischemia in the brainstem and cerebellum, patients will experience dizziness and nausea. In addition, small foci of cerebral hemorrhage may also show symptoms of dizziness and nausea, such as a small amount of hemorrhage in the cerebellum, or a small amount of hemorrhage in the occipital lobe and the brainstem, when the patient will also have symptoms of dizziness and nausea. Patients with cerebral infarction have cerebral infarction in the location of brainstem and cerebellum, and they will also have symptoms of dizziness and nausea. Some patients with vegetative nerve function disorders may also experience dizziness and nausea due to poor rest and sleep. In addition, upper respiratory tract infections can also cause dizziness and nausea. Therefore, the cause of dizziness and nausea must be clearly identified.