A blow to the head may result in local tissue hematoma, cerebral contusion and other injuries, causing migraine headaches, and in severe cases, nausea, vomiting, coma and other symptoms. Migraine is a kind of primary headache, which is mostly related to genetic, endocrine, environmental and emotional factors, and has little to do with a blow to the head. After being hit on the head, it will cause soft tissue injury to the scalp at the site of the primary injury, causing headache on one side; in addition, due to the concussion of the brain tissue inside the skull during the blow, resulting in a contralateral injury, it may cause cerebral contusion on the side of the blow or the opposite side of the blowing point, resulting in a migraine on the side of the injured side or on the opposite side. After craniocerebral injury, in addition to the occurrence of migraine, injuries such as subarachnoid hemorrhage, epidural or subdural hematoma may occur, resulting in headache, vomiting and other manifestations, and in severe cases, coma and other disorders of consciousness. Immediate treatment is required, including the use of drugs such as mannitol and furosemide to reduce cerebral edema. Severe brain damage or hemorrhage may require surgical intervention. Severe headaches after being hit are recommended to go to the hospital in a timely manner, under the guidance of a professional doctor for reasonable treatment, and strictly comply with the doctor’s prescription of medication, so as to avoid delaying the condition.