Patients who have headaches at night need to be diagnosed accurately, and the common causes are as follows: 1, overwork during the day: patients are overworked during the day and have insufficient blood supply to the brain at night, resulting in headaches; 2, cerebrovascular stenosis: patients may have cerebrovascular stenosis, resulting in insufficient blood supply to the brain at night, and lack of blood and oxygen to the brain tissue, which causes headaches; 3, cervical spine problems: patients with cervical spine, especially the first 3 segments of the cervical spine The patient’s cervical spine, especially the first 3 segments of the cervical spine, is misaligned, and the neurovascular supply to the brain is stuck, such as the vertebral artery is squeezed, which causes cervicogenic cerebral insufficiency. At the same time, patients work more during the day, leading to the aggravation of cervical spondylosis at night, leading to insufficient blood supply to the brain and headache symptoms at night; 4, metabolic diseases: such as hyperlipidemia and hyperglycemia, when sleeping at night, the blood flow slows down due to thick blood, leading to insufficient blood supply to the brain and headache symptoms.