Insufficient blood supply to the brain does not cause headaches per se, but may be due to other causes when patients experience headaches. There are many clinical causes of cerebral insufficiency. In middle-aged and elderly people, most of them are caused by atherosclerosis, hyperlipidemia and hyperglycemia. In young people, it is generally considered to be caused by mental tension, stress or sleep disorders, irregular life, excessive late nights, or it may be caused by prolonged head down looking at cell phones, playing with computers or prolonged desk work. If the head is lowered for a long time, it will easily cause the neck and shoulder muscles to contract and spasm, which can involve the scalp nerves and blood vessels, thus causing discomfort such as headache, dizziness, nausea, vomiting, etc. Patients can also experience neck and shoulder pain and discomfort. If the patient is under prolonged mental tension, stress, and short sleep, headache and dizziness may occur, and the patient may also experience memory impairment. In addition, it may also be caused by elevated blood pressure, which should be monitored. If blood pressure is elevated blood pressure lowering treatment should be given.