Concussions are diagnosed primarily based on post-injury clinical symptoms, which cannot be detected. Concussion is a mild craniocerebral injury in which the patient presents with an immediate post-injury history of transient coma that varies from seconds to minutes and does not exceed 30 minutes. Patients often have retrograde amnesia after the injury, meaning that they cannot recall the injury at the time, and no intracranial hemorrhage is seen on cranial CT or magnetic resonance imaging. Patients often have a combination of headache, dizziness, nausea, vomiting, insomnia, and anxiety. Among them, a brief history of coma and retrograde amnesia are the main elements to diagnose concussion, and the above 2 points must be present to diagnose concussion, and combined with cranial CT and MRI suggesting no intracranial hemorrhage, concussion can be diagnosed.