This document discusses diagnosis and treatment of traumatic brain injury (TBI). It begins by providing background on TBI, including that it is a serious public health problem and the leading cause of death and disability worldwide. The document then discusses diagnosis of TBI through methods such as assessing loss of consciousness, imaging scans, and neuropsychological evaluation. It also covers treatment of TBI, which involves multidisciplinary rehabilitation and a wide range of emerging treatments. The goal is improving quality of life and community integration for individuals with TBI.