When the pain-sensitive structures in the patient’s brain are chemically stimulated or physically compressed, the patient will experience head swelling or pain, and the common causes are as follows: 1, some people may experience head swelling and pain due to intracranial occupancy or high cranial pressure or low cranial pressure resulting in vascular compression; 2, persistent contraction of the head muscles will also feel head swelling, such as after a long period of ambulatory work, or cervical spondylosis resulting in neck muscle Tension, the feeling of head distension can occur; 3, brain nerve dysfunction, such as staying up late or long-term insomnia patients also tend to feel head distension; 4, increased blood pressure, cerebral blood supply and other diseases will also be manifested as a feeling of head distension, not awake.