1, mental stress: long-term mental stress, or the presence of anxiety, depression, etc., will lead to head distension or head discomfort symptoms; 2, lack of sleep: overwork, often stay up late, etc. will lead to a reduction in deep sleep time, resulting in the brain does not get sufficient rest 3, cervical spine disease: cervical spine disease can lead to compression or stimulation of the cervical spinal cord, causing head swelling and discomfort; 4, hypertension: poor control of hypertension, increased pressure on the blood vessels in the brain, causing head swelling, dizziness, headache and other symptoms; 5, cold: cold and certain infectious diseases can cause general muscle and nerve dysfunction, weakness, easy fatigue and other performance, head also appear head swelling, headache and other manifestations; 6. Migraine: it can be manifested as unilateral moderate to severe head swelling and pain, accompanied by pulse-like beating; 7. Other cranio-cerebral diseases: it can be seen in cerebrovascular disease and intracranial tumor, atypical intracranial infection, etc., which can induce head swelling and pain.