Patients who have been dizzy and nauseous need to be alert to posterior circulation ischemia, hypertension, Meniere’s disease or other diseases as follows: First, posterior circulation ischemia: the most common is posterior circulation ischemia, posterior circulation ischemia, including cerebral arterial insufficiency, cerebral infarction, and other causes, especially cerebral infarction, which is more dangerous and requires immediate hospital consultation. Second, hypertension: especially malignant hypertension, when the blood pressure is particularly high, it can induce hypertensive encephalopathy, leading to dizziness, nausea, vomiting and other phenomena. Third, Meniere’s disease: Meniere’s disease also belongs to vertigo, and patients with vertigo usually have the feeling of dizziness, nausea and vomiting, accompanied by tinnitus and hearing loss. Fourth, other diseases: vestibular neuritis can also appear all the time dizziness, nausea and other phenomena, in addition there are other reasons, such as low blood pressure, there are patients because of food poisoning, etc., can also cause dizziness, nausea phenomenon.