Headache is a common symptom of many diseases. Headache can be divided into: migraine, hypertensive headache, headache due to lesions of head organs and adjacent tissues, trigeminal neuralgia, and chronic headache after extracranial head. Migraine is better diagnosed: migraine: mostly seen in females, often starting in adolescence, with periodic attacks, moreover, some patients have headache closely related to menstrual cycle. Typical attacks are often preceded by drowsiness, lethargy, depression, and possibly flashes of light and dark spots in front of the eyes, as well as numbness of the face, lips, and limbs, and aphasia. These aura symptoms subside after about 20-30 minutes, and then a severe headache appears, which is as painful as a drill and pins and needles. The headache is often on one side, often starting in the orbit or forehead and extending halfway to the side of the head, or throughout the head. The headache lasts for several hours or days and then gradually decreases, often relieving completely after falling asleep. There is usually a family history. Hypertensive headache: This headache is a common symptom in patients with hypertension. The headache is often a deep throbbing-like dull pain, sometimes accompanied by a feeling of tight pressure in the head. The area of pain is often in the frontal and occipital regions. The degree of headache is often associated with a sudden rise in blood pressure. Headaches caused by lesions of head organs and adjacent tissues are divided into: ophthalmogenic headache, otogenic headache, headache caused by inflammation of nose or sinuses, odontogenic headache, and headache caused by cervical cone disease. Trigeminal neuralgia: It is mostly seen in patients over 40 years old. The pain site is limited to the trigeminal neuralgia division area, and the pain is sudden paroxysmal lightning-like severe pain, like knife cutting, drilling, or fire. The pain is short in duration, from a few seconds to a few minutes, with sudden onset and sudden cessation. The attack may cause ipsilateral muscle twitching, conjunctival congestion, lacrimation or salivation. Trigeminal neuralgia can be triggered by talking, eating, brushing teeth, washing face, blowing wind, etc. Therefore, the affected person is afraid to talk, wash face or eat. Trigeminal neuralgia has periodic attacks, with fewer attacks and longer intervals at the beginning of the disease. As the disease progresses, the attacks become more frequent and the intervals are shorter. Chronic headache after cranial trauma: Patients have a history of cranial trauma. This kind of headache is mostly accompanied by dizziness, fatigue, insomnia, agitation, and lack of concentration of thought. The headache can be aggravated during emotional tension, exertion, and bending.