Concussion is a relatively mild brain injury. The mechanism of concussion is generally considered to be caused by damage to the reticular formation of the brainstem, which manifests as temporary dysfunction of the central nervous system, without imaging visible organic damage. I. Diagnostic criteria 1. History of head trauma and a brief loss of consciousness immediately after the injury, usually not more than half an hour; 2. Patients who recover consciousness may not be able to remember current or recent events, that is, retrograde amnesia, and may be accompanied by symptoms of dizziness and headache; 3. Neurological examinations and corresponding auxiliary examinations do not show positive manifestations. Second, the prognosis of general concussion does not require special treatment, rest for 5-7 days can be, you can also use symptomatic sedative and analgesic drugs to eliminate the fear, most patients can return to normal within 2 weeks, the prognosis is good. Third, precautions 1, good rest habits: try to avoid staying up late, to ensure that sufficient sleep every day. Pay attention to rest and do not overuse your brain causing fatigue; 2. Maintain a light diet: maintain a light diet, prohibit spicy and stimulating foods, sugary drinks, alcohol, strong coffee and tea, and increase the daily intake of vegetables and fruits to ensure a balanced nutrition. In addition, you can eat some animal offal, eggs, nuts, etc.; 3, pay attention to safety: when headaches, dizziness and other symptoms occur, avoid driving, working at height and other acts that are prone to danger; 4, pay attention to emotional management: daily work and study to avoid tension, anxiety and other emotions.