For patients with hypertension, dizziness and vomiting are usually caused by a transient increase in blood pressure or unstable blood pressure, and for patients with hypertension, transient sympathetic hyperexcitation. For example, mood swings, anger, anxiety, tension or excessive smoking, excessive alcohol consumption, drinking large amounts of strong tea, coffee and other stimulating beverages can lead to sympathetic overexcitation, causing blood pressure fluctuations and blood pressure instability, which can lead to dizziness and vomiting symptoms. For malignant hypertension and hypertensive encephalopathy resulting in increased intracranial pressure, there will also be varying degrees of dizziness, headache accompanied by blurred vision, nausea, vomiting and other clinical symptoms and performance.