Mild patients who develop hypertension do not experience significant dizziness and vomiting, but if the hypertension is relatively severe or has reached hypertensive crisis, as well as if the blood pressure rises excessively in a short period of time, the patient will experience dizziness accompanied by nausea and vomiting. In severe cases, if hypertensive encephalopathy or significantly elevated intracranial pressure occurs, headache, nausea, vomiting, dizziness, optic nerve papillary edema, blurred vision, loss of consciousness, and even stroke, myocardial infarction, renal impairment, and angina pectoris may occur. These are the clinical symptoms caused by severe hypertension. Once the patient has developed these symptoms, he must go to the hospital for treatment to find out if there is any damage to other target organs of hypertension, and choose the appropriate antihypertensive drugs according to the situation in order to relieve dizziness and vomiting.