How is concussion defined?

How is concussion defined?

• A. A structural injury to the brain
• B. A mood disturbance after head impact
• C. A mild traumatic brain injury from a direct blow, bump, or jolt to the head, neck, or body resulting in an impulsive force being transmitted to the brain
• D. A severe brain injury with loss of consciousness

Answer: (C)

Concussion is a mild traumatic brain injury caused by an impulsive force transmitted to the brain from a direct blow to the head, neck, or body. It reflects transient brain function disruption rather than a structural brain lesion, and it can occur with or without loss of consciousness. This definition best captures concussion because it centers on the biomechanical event causing temporary neural dysfunction, not on a structural injury, a mood symptom, or a severe injury.

Concussion is a mild traumatic brain injury caused by an impulsive force transmitted to the brain from a direct blow to the head, neck, or body. It reflects transient brain function disruption rather than a structural brain lesion, and it can occur with or without loss of consciousness. This definition best captures concussion because it centers on the biomechanical event causing temporary neural dysfunction, not on a structural injury, a mood symptom, or a severe injury.