Traumatic Brain Injury (TBI) is defined by the Individuals with Disabilities Education Act as "an acquired injury to the brain caused by an external physical force, resulting in total or partial functioning disability or psychosocial impairment, or both, that adversely affects a child's educational performance." Note that hereditary conditions that affect the brain or birth complications do not fall under TBI but may fall under other categories of disability such as chronic health conditions (taken from https://www.specialeducationguide.com/disability-profiles/traumatic-brain-injury/). People can acquire TBI through trauma at work, in military service, car accidents, even sports injuries and falls, and it is hard to predict how differently or severly one can be affected - common issues can include memory or concentration difficulties, impairments to physical and emotional control centers of the brain, sometimes paralysis or disfunction in certain areas of the body.
Broken takes an intensely personal look into the lives of several TBI patients in the New Zealand ABI Rehabilitation program and their different journeys toward recovery