Sudden dizziness, sweating, and vomiting are first considered to be caused by cerebrovascular disease, which is clinically common in posterior circulation ischemia. The posterior circulation is caused by the slowing down of blood flow in both vertebral or basilar arteries, and in severe cases, occlusion occurs, resulting in ischemic symptoms in the brainstem or cerebellum, and the patient may experience dizziness, nausea, vomiting, and in severe cases, panic and sweating. For posterior circulation ischemia, patients are recommended to have a head CT or intracranial segmental vascular ultrasound. Treatment may include antiplatelet aggregation, improving circulation, and anticoagulation or fibrin-lowering therapy if necessary. Generally, most of the symptoms can be relieved after the acute treatment. Secondly, sudden dizziness, sweating and vomiting can also be seen in peripheral vertigo. The most common clinical condition is Meniere’s syndrome, which is caused by vestibular labyrinth edema. It is usually triggered by exertion, emotional stress, or a cold. Patients may experience dizziness, sweating, nausea, and vomiting, as well as ear congestion, ear swelling, and hearing loss. Treatment can be given to patients to reduce vestibular labyrinth edema and other symptomatic treatment.