Headache is one of the most common clinical symptoms and is a subjective sensation produced by the body in response to various pain-causing factors and belongs to the category of pain. Pain-causing factors can be physical, chemical, biochemical or mechanical, etc. These factors stimulate sensory nerve endings located in the intracranial and extracranial tissue structures and are perceived through the corresponding conduction pathways to the brain. Headaches, like other pains, are often accompanied by emotional reactions in addition to somatic sensations. Since the distribution of nerve endings of nociception in various intracranial tissues varies greatly, the sensitivity of different tissues to the same stimulus varies greatly, and the tolerance of each person varies, so the response to pain varies greatly. According to the statistics of the American Headache Society, 30% of people have experienced headache in varying degrees. In the past, when people had headaches, they would go to a neurologist, who would mostly give them oral medication for vascular or neurological headaches. In fact, after taking the medication, many people’s headaches did not reduce, and even recurred, suffering from headaches for decades without finding a complete solution. In 1983, an American doctor proposed the idea of cervicogenic headache, which gradually gained recognition, and in 2005, the annual meeting of the American Headache Society concluded that 90% of headaches are actually cervicogenic headaches. In other words, the headaches that have plagued many people for many years are actually headaches caused by cervical spondylosis. So, if you accidentally get a headache, you may want to visit a pain clinic, and you may get an unexpected benefit.