Children who fall concussion, usually have headache, dizziness, retrograde amnesia, transient coma and other symptoms, should promptly seek medical attention. 1. Headache, dizziness: many children injured in the head after a fall, there will be headache, dizziness and other symptoms, some patients may just scalp hematoma or surface pain, but there may be related pain and discomfort within the brain manifestations, such as swelling and pain, etc., the serious cases can be accompanied by nausea and vomiting. 2. Retrograde amnesia: mainly refers to forgetting the first few seconds or minutes of the injury, and not being able to accurately describe the process of the injury, especially some of the details, are forgotten. 3. Transient coma: the patient appears to call not awake, stimulate the immobile state, the duration is greater than 5 minutes, but less than half an hour, the later generally able to wake up on their own, and there will not be a very serious change in consciousness. It is recommended that patients with suspected concussion should seek timely medical treatment under the guidance of a doctor.