Brain injuries are prominent in the United States and contribute to approximately 30 percent of all deaths involving injuries, according to the Centers for Disease Control and Prevention. Yet brain injuries can be complicated for medical professionals to understand, diagnose and treat. These injuries occur when the soft tissue of the brain becomes damaged from a sudden impact like in an automobile or slip-and-fall accident. Brain injuries do not always present immediate symptoms and in some cases, the injury can go unnoticed for months. Some Las Vegas personal injury attorney cases involve situations where car accident victims are not aware of their brain injuries until many days after the actual incident takes place. Researchers continue to investigate the dynamics of traumatic brain injury in the hopes of finding new treatment options.