The causes of headache in the morning are as follows: 1. It may be related to the patient’s poor sleep leading to brain nerve dysfunction, if the patient often stays up late and sleep deprivation is likely to occur. 2. It is recommended that patients take blood pressure to clarify. Because many people suffer from hypertension, it is easy to have elevated blood pressure fluctuations in the morning and lead to headache. 4, patients with headache in the morning should pay attention to the existence of sleep apnea syndrome, which is caused by chronic ischemia and lack of oxygen in the brain, and patients will manifest as head swelling and pain.