When someone arrives at an emergency room in a coma, someone with a serious brain injury, there is a long and well-established set of processes in place that allow for doctors to rapidly evaluate, triage and manage their treatment. The procedures for evaluating people who have a milder form of traumatic brain injury, a concussion, have historically been a little less well-defined. But experts say things have gotten better in recent years.

Originally released by Inside Science, 2017. Streaming video file encoded with permission for digital streaming by Infobase on March 26, 2018.

Concussion: Its Diagnosis and Treatment (5:43); .