Headaches can be caused by hypertension, but not all headaches are caused by hypertension for the following reasons: i. Clinically, some headaches are caused by migraine attacks leading to stimulation, and patients will have a history of recurrent headaches. Second, clinically it can also be seen in intracranial diseases, such as intracranial occupancy, cerebral hemorrhage, subarachnoid hemorrhage, cerebral infarction, etc., which lead to headache in patients. It is recommended that patients with headache monitor their blood pressure and control it below 140/90 mmHg, and if necessary, perform CT or MRI of the head to exclude intracranial organic diseases. Third, headache is also a concomitant symptom of many diseases, such as patients with sleep disorders, which cause headache due to poor sleep quality, and patients with colds and fever may also have headache.