The head is hit by the head for a month or two has been painful, mostly consider the sequelae of concussion, subdural, epidural hematoma, scalp soft tissue injury and other causes of craniocerebral injury. 1. Sequelae of concussion: some patients will have sequelae left after concussion, most of the patients with concussion can return to normal after resting for 7~10 days on their own, and there will be no sequelae. If the central nervous system of the brain has been injured, as well as psychological reasons and other problems, it can last more than two weeks and still have symptoms, i.e. post-concussion sequelae. 2. Epidural hematoma: The most common sites are located in the frontal, parietal and occipital regions. The course of the disease is usually 12 to 180 days. Chronic epidural hematoma often manifests as progressive headache, nausea, vomiting, mild drowsiness and other symptoms. 3. Subdural hematoma: It mainly originates from cerebral cortical blood vessels. Headache, nausea and vomiting, optic papillae edema and other symptoms can be seen.CT examination can see crescent-shaped or half-moon shaped low-density shadow under the cranial plate, which can help to confirm the diagnosis. 4. Scalp soft tissue injury: the scalp is also rich in blood vessels, once hit or torn, the scalp will appear hematoma or localized bruising and pain. It is recommended to go to the regular hospital for examination and treatment in time.