Nap up headache symptoms, the first nap, the body is in a shallow sleep, shallow sleep when the vagus nerve excitation, the blood vessels in the brain is dilated, then the blood flow to the brain will be reduced, the patient will have insufficient blood supply to the brain. If the nap time is long, then the brain will appear ischemia and hypoxia, it will lead to the symptoms of nap up headache. It is recommended that each time a patient takes a nap, the nap time should not exceed 30 minutes, if the time is extended, headache symptoms will occur. Patients in the process of sleep to maintain a normal sleep position, not to sleep on the table, sleep on the table will affect the vertebral artery blood supply, will also appear nap up headache symptoms.