Tension headache is a tightness and pressure in the head caused by a tension headache. It is usually caused by the contraction of the muscles in the head and neck area. It can also be caused by walking or sleeping in an incorrect posture, or working with your head buried for too long. Whatever the cause, these headaches are temporary and can be stopped by taking general headache medication. Headaches caused by eye strain are similar in sensation to headaches caused by muscle contraction, but the former is clearly related to eye use, and the headache can be exacerbated by excessive eye use. In addition, emotions are also related, such as depression and anxiety, prolonged stress and arthritis in the neck can also cause this kind of headache. 1.Migraine is a vascular headache: it is common in young and middle-aged people and children. The headache is located in the temporal frontal orbit on one side, with throbbing pain, often accompanied by nausea and vomiting, and is an episodic headache. The headache may be preceded by visual disturbances such as blurred vision, blind spots in the visual field or hemianopia, or the migraine may start without any aura and usually lasts for several hours or days. Very few patients have a persistent migraine. In a small number of patients, migraine may coexist with tension-type headache, making it difficult to distinguish between the two. 2. Cluster headache: This kind of headache may be vascular in nature and is related to hypothalamic dysfunction. The headache is located on one side of the orbito-temporal frontal area, and in severe cases, the headache attacks are intensive and severe without aura. The headache attacks are rapid and can stop suddenly. The attacks are accompanied by conjunctival congestion, lacrimation and excessive sweating. However, the remission period can last for months to years. It is not difficult to distinguish it from tension-type headache by detailed medical history and observation of attacks. 3.Trigeminal neuralgia: It is a transient severe pain in the distribution area of the trigeminal nerve of the face. The pain is only a few seconds each time, and it occurs several times to dozens of times a day. The pain is like cutting, burning or stabbing and is often triggered by washing, brushing, talking and chewing. Patients can often point out the location of the pain trigger, called the “trigger point”. The disease is more common in middle-aged and elderly people, and the 2nd and 3rd branches of the trigeminal nerve are more frequently involved. If the first branch is involved, it should be distinguished from ETTH.