Dizziness and nausea are more common with cerebrovascular disease, and are especially common with posterior circulation ischemia. This mainly refers to the double vertebral and basilar arteries, which mainly supply blood to the brainstem and cerebellum, for which they are in charge of the balance, and when ischemia occurs, the patient may experience dizziness, nausea, and walking obliquely. For posterior circulation ischemia, symptomatic treatment such as intracranial segmental angiography, oral medication to improve circulation and antiplatelet aggregation can be performed. Dizziness and nausea can also be seen in peripheral vertigo, the most common clinical condition is Meniere’s disease. This is a dizziness and nausea that occurs with vestibular labyrinth edema, accompanied by ear stuffiness, ear swelling, and hearing loss. Patients are advised to consult an otolaryngologist, and if necessary, medications to reduce vestibular labyrinth edema can be applied. This symptom can also be seen in anemia, which can be severe with dizziness, weakness of the limbs, and nausea. There are also gastrointestinal colds that can cause dizziness and nausea, and can be accompanied by diarrhea. Food poisoning can also cause dizziness and nausea. For dizziness and nausea, it depends on what other symptoms are associated with it, and if necessary, relevant tests should be performed.