The main causes of head distension are the following: 1, lack of sleep, overexertion, poor sleep quality may be the symptoms of insufficient blood supply to the cerebral arteries, dizziness, head distension, memory loss and other symptoms. 2, hypertensive disease, the cause of head distension is caused by increased intracranial pressure, long-term unstable blood pressure control may cause brain hemorrhage, cerebral infarction, hypertensive nephropathy, fundus changes and other complications, can go to the 3.Cold, mostly viral infection, common clinical symptoms include dizziness, headache, nasal congestion, runny nose, cough, etc. 4.Migraine, temporal or bilateral temporal pain may be caused by migraine, overexertion, insomnia, mental and psychological stress may trigger the acute recurrence of migraine, usually do not stay up for a long time. It is better to go to the hospital for further examination and diagnosis, and then treat the symptoms.