The causes of headache mainly include: 1, tension headache, which appears after emotional tension, excitement or exertion or staying up late, similar to wearing a hat on the top of the head, with tension, golden band-like headache; 2, vascular headache: mainly related to the headache caused by the expansion and pulling of blood vessels, such as the common clinical migraine, which is classified as vascular headache; 3, central headache: central headache is mostly caused by central nervous system diseases, commonly including cerebrovascular diseases, central nervous system infection, i.e. central nervous system inflammation, such as encephalitis, meningitis, etc. In addition, there are also intracranial occupational diseases, such as central nervous system tumors, including headaches caused by benign or malignant tumors; 4. Headaches caused by other organs: for example, headaches caused by diseases of the five senses, including ophthalmogenic diseases, such as glaucoma, which can cause headaches due to increased intraocular pressure; otogenic headaches, such as those caused by otitis media; odontogenic headaches, such as those caused by dental and periodontal diseases; and Headache caused by rhinogenic paranasal sinus disease, which often occurs when changing position upon waking up early in the morning; posterior occipital pain caused by cervical spine disease, i.e., occipital neuralgia; headache caused by cranial nerve disease, commonly trigeminal neuralgia, which is mainly forehead pain and rarely exceeds the midline range. For these diseases, it is recommended that patients go to the hospital as early as possible to see a specialist for treatment; 5. Benign functional headache, if such headache occurs, patients can be as relieved as possible, but it should also be identified by a specialist, not the patient himself can be completely sure. Most of these benign functional headaches are caused by occasional late nights or stress and can be recovered soon after rest, without other symptoms.