High blood pressure causes headaches in most patients, and headaches and dizziness are the most common symptoms when there are fluctuations in blood pressure. Headache is a relatively common symptom in patients with hypertension. Most patients experience headache, dizziness, head swelling, ringing in the ears, palpitations, accompanied by poor sleep quality and emotional irritability in the early stages of elevated blood pressure. If patients undergo timely treatment to control the rise in blood pressure, it can effectively stabilize blood pressure so that target organ damage can be avoided. For example, some patients may also experience headache symptoms due to poor long-term blood pressure control, which can lead to cerebral atherosclerosis, etc. If the blood pressure rises sharply and the regulation of cerebral blood vessels is impaired, severe headache accompanied by nausea and vomiting may also occur. Attention should be paid to the presence of cerebral hemorrhage, because a sharp increase in blood pressure increases the risk of cerebral hemorrhage. Therefore, when hypertension occurs early in a patient’s life, it is recommended to visit the cardiology department of the hospital and monitor 24-hour ambulatory blood pressure to facilitate the diagnosis. Patients diagnosed with hypertension are advised to follow medical advice for continuous medication and not to easily adjust medication or stop medication on their own to avoid rapid increase in blood pressure in a short period of time or adverse conditions such as hypertensive crisis, angina pectoris, heart attack and cerebral infarction.