Acquired Brain Injury (ABI)
The position of the Brain Injury Network is that acquired brain injury (ABI) includes traumatic brain injuries (TBI's), strokes, brain illness, and any other kind of brain injury acquired after birth.
Definition of Traumatic Brain Injury (TBI)
"A traumatically induced structural injury and/or physiological disruption of brain function as a result of an external force that is indicated by new onset or worsening of at least one of the following clinical signs, immediately following the event."
Source: Traumatic Brain Injury: Definition and Reporting by S. Ward Casscells, MD., Department of Defense