Exceptional neurologic recovery in a teenage football player after second impact syndrome with a thin subdural hematoma.

Second impact syndrome (SIS) occurs when a person sustains a second brain injury before the symptoms of an initial brain injury resolve [1,2]. Severe brain edema develops due to cerebral vasculature dysautoregulation and causes significant neurologic deficits [1-3]. SIS is a rare condition that occurs primarily in adolescents and young adults. Severe neurologic deficits and death typically occur with SIS [1,2,4]. This report describes an exceptional neurologic recovery in a teenage football player after SIS with a thin subdural hematoma (SDH). Institutional review board approval was obtained for this case study.