A baby bumping the back of the head may cause epilepsy. Epilepsy, the most common neurological disorder in children, is a chronic brain disease with a persistent tendency to produce seizures. Triggers are various internal and external factors that can lead to seizures, either natural sensory stimuli from normal life or stimuli that appear suddenly. Due to immature brain development and imperfect blood-brain barrier in infants and young children, craniocerebral trauma and intracranial infections may induce epilepsy. When an infant or young child knocks on the back of the head, the brain may be under the action of external force may cause cerebral contusion, brain fracture, etc., and the local brain tissue is damaged or compressed may have abnormal discharge, which may cause epileptic seizure. Infants and children should be closely observed for the presence of mouth twitching, frequent spasms, disorientation and other manifestations. At the same time, the time, duration, and scene of the seizure can be recorded so that the doctor can make a judgment on the condition. It is recommended to go to regular hospitals for EEG examination to clarify the diagnosis and timely treatment, so as not to miss the time of treatment.