A piece of pain on the head may be related to elevated blood pressure and brain diseases, as follows: 1. Elevated blood pressure: when blood pressure is elevated, the cerebral blood vessels produce certain expansion or pulling stimulation, which produces certain damage to the cerebral vascular lining, or stimulates the sensory nerves and sympathetic nerves of the vessel wall and vascular lining, thus causing headaches to occur; 2. Brain diseases: such as cerebral embolism, cerebral infarction, cerebral hemorrhage, cerebral hemangioma, etc., also When there are these lesions in the brain, most of them will cause an increase in the permeability of the blood vessels in the corresponding parts, resulting in the stagnation of local blood circulation, causing an increase in the pressure in the brain, thus forming a compressive effect on the sensory nerves of the meninges and causing headaches.