Hypertension can cause hemodynamic changes and cardiovascular disease, which in turn can lead to symptoms such as head swelling. 1. High blood pressure and head swelling may be due to elevated blood pressure, resulting in certain changes in intracranial hemodynamics, and the intracranial perfusion pressure will also change accordingly. Some patients may experience significant head swelling, headache, dizziness or even syncope after the blood pressure rises, which is a common symptom of hypertension. 2. Hypertension can also jeopardize the cardiovascular and cerebrovascular system, resulting in cardiovascular and cerebrovascular diseases, such as vascular stenosis, cavernous cerebral infarction, cerebral aneurysm rupture and bleeding, and so on. Therefore, headache caused by elevated blood pressure may be due to vascular diseases, and systematic examination such as CT or MRI of the head is needed. It is recommended to go to the hospital for relevant examinations to clarify the cause of the disease, early detection and early diagnosis and treatment if you find that your blood pressure is elevated and your head is swollen.