This book was published by the United States Army Medical Department’s Borden Institute. More than a decade of war has underscored the incidence of a common injury that can occur both on and off the battlefield—mild traumatic brain injury (mTBI), also known as concussion. Concussions can occur due to blast events, motor vehicle crashes, training accidents, falls, sports, and general mishaps. This book provides a critical review of the current research and clinical rehabilitative care practices, assessment, treatment and management of mild TBI at all levels of care – from the acute theater of war to long term life care.