The term “brain injury” is generally considered synonymous with “traumatic brain injury,” or TBI, though some brain injuries are considered “acquired brain injuries,” or ABI.  According to the Brain Injury Association of America (BIAA), TBI “is an insult to the brain…caused by an external physical force that may produce a diminished or altered state of consciousness, which results in an impairment of cognitive abilities or physical functioning.” TBI does not include degenerative or congenital brain injuries and may also result in disturbance or impairment of emotional and behavioral functioning.