Headache is a common clinical symptom, often confined to the upper part of the skull, including the arch of the eyebrow, the upper edge of the auricle and the pain above the line of the external occipital ridge are collectively called headache. According to the international classification standard, the causes of headache are divided into three major categories: 1. primary headache: including migraine, tension headache, cluster headache, etc.; 2. secondary headache: the most common ones are cerebrovascular diseases, such as cerebral hemorrhage and subarachnoid hemorrhage. It also includes headache caused by head and neck trauma and infection, such as intracranial infection, meningitis, encephalitis, etc. In addition, there are some other diseases that can also cause headache, such as pentacameral diseases and cervical muscle tension.3. Painful cerebral neuropathy and other facial pains, such as trigeminal neuralgia, glossopharyngeal neuralgia and occipital neuralgia. Headache can also be classified according to the way it starts: 1. Acute onset headache: If the patient has an acute onset headache with vomiting and significantly increased blood pressure, cerebrovascular disease should be considered and the patient is advised to go to the hospital for CT examination to exclude cerebral hemorrhage or subarachnoid hemorrhage. However, if the patient has an acute attack of headache with fever and cold, it is recommended that the patient go to the hospital for further tests, such as CT and lumbar puncture, to clarify whether it is meningitis or encephalitis; 2. Subacute headache: if the patient has a non-acute onset and is accompanied by an aggravating process, CT is needed to rule out whether it is an intracranial occupancy, such as a tumor; 3. Chronic onset, if the patient has headache for 3-5 years and then recurs recently, especially In young patients, primary headache should be considered in such cases, such as migraine, which is more frequent in women, tension headache and cluster headache, which are more frequent in young and middle-aged people. Patients with headache attacks are advised to go to the neurology department of a hospital to have the cause of the headache examined and secondary headaches such as cerebrovascular disease, intracranial infection and tumor excluded. For primary headache attacks, non-steroidal antipyretic and analgesic drugs can be used to relieve the headache, do not blindly take drugs at home.