Patients with primary or secondary hypertension may experience headache symptoms when their blood pressure suddenly and significantly increases under the action of certain triggers, whether or not accompanied by hypertensive target organ damage. 1. When blood pressure rises, generally exceeding 180/120 mmHg, with progressive cardiac, cerebral, renal and other important target organ insufficiency, it is called hypertensive emergency. In hypertensive emergencies induced brain damage, including hypertensive encephalopathy, intracranial hemorrhage (cerebral hemorrhage and subarachnoid hemorrhage), and cerebral infarction, patients will have headaches of varying degrees, and the degree of headache is not proportional to the blood pressure level. 2. When blood pressure is significantly elevated, but not accompanied by severe clinical symptoms and progressive target organ damage, it is called a subacute case of hypertension. Patients may have symptoms caused by significantly elevated blood pressure, such as headache, chest tightness, rhinorrhea, and irritability. 3, A few patients have an acute progression with diastolic blood pressure persistently ≥130 mmHg with headache, blurred vision, fundus bleeding, exudation and optic disc edema, and prominent renal damage, called malignant hypertension. Hypertensive headache should not be ignored and the degree of progression needs to be determined according to the specific condition and combined with ancillary tests. We recommend you to visit the hospital.