Early manifestations of pediatric concussions can show up as transient impairment of consciousness, retrograde amnesia, headache, dizziness, nausea, and vomiting. A concussion is a transient functional impairment of the brain due to head trauma. It can usually manifest as a transient impairment of consciousness, a process that can last from a few minutes to ten minutes, mostly no more than 30 minutes. Symptoms such as nausea, vomiting, headache, and dizziness may still occur after recovery from the impaired consciousness. Memory impairment may also be manifested, and some patients may have retrograde amnesia, i.e., an inability to recall the time of the onset of the disease and the course of the disease. Although patients have clear symptoms, neurological examination may show no obvious abnormality, and auxiliary examination of head CT is also normal. If concussion is suspected, the patient should seek medical treatment in time, and actively diagnose and treat under the guidance of the doctor.