The causes of head swelling in bed are as follows: 1, related to cerebral vascular spasm, cerebral arteriosclerosis caused by insufficient blood supply to the brain, suffering from cerebrovascular disease, poor blood circulation in the head, cerebral ischemia, lack of oxygen, there may be head swelling, headache, dizziness, etc., through the head CT, blood rheological examination to determine the cause of the cause of treatment; 2, related to elevated blood pressure or high blood lipids, increased blood viscosity, according to the examination 3, related to plant nerve dysfunction, neurasthenia, through diet and exercise and other methods to adjust the quality of sleep; 4, cervical spine disease can also lead to sleep head swelling, you can do more neck activities, traction, massage and other treatments.