Define traumatic brain injury (TBI).

Traumatic brain injury (TBI) is characterized by damage to the brain resulting from an external force, which can include scenarios such as a blow to the head, a fall, or being struck by an object. This definition emphasizes the role of external factors in causing the injury, distinguishing TBI from other types of brain injuries that may arise from internal causes or without any discernible external impact.

This understanding is vital for recognizing the diverse mechanisms of brain injuries and for formulating appropriate treatment and rehabilitation strategies. The focus on external force also aligns with clinical definitions and guidelines used within the field of neurology and rehabilitation, underscoring the importance of contextual factors in both the incidence of injuries and their management.