Skull cap pain is known as headache. Diseases that cause headache include primary headache, high blood pressure, intracranial space-occupying disease and so on. 1. Primary headache: for example, tension headache will have pain in the top of the head, accompanied by obvious tightness, dull pain in the head, and so on. 2. Hypertension: when blood pressure suddenly rises and causes hypertensive emergencies, cerebral edema will occur, which can increase intracranial pressure and the patient may also have symptoms of headache. 3. Intracranial space-occupying lesions: including cerebral hemorrhage, subarachnoid hemorrhage, intracranial aneurysm and so on will lead to increased intracranial pressure, and may have symptoms of headache. Headache can also be caused by other reasons, patients with headache need to consult a doctor as soon as possible, under the guidance of the doctor to identify the cause, targeted treatment.