What is considered a non-traumatic brain injury?

A stroke or cerebral event is classified as a non-traumatic brain injury because it arises from internal factors affecting the brain rather than from an external force. Non-traumatic brain injuries can occur due to various medical conditions, such as a stroke, which occurs when the blood supply to a part of the brain is interrupted, leading to cell death. This type of injury does not involve any external impact or force but is instead a result of physiological changes or diseases.

In contrast, the other options involve physical impacts or external forces. A fracture due to an accident, an injury caused by blunt force, and an injury from a fall all involve direct trauma to the head, which can lead to traumatic brain injuries. These examples highlight how non-traumatic brain injuries differ fundamentally from traumatic ones by being the result of internal factors rather than external physical impacts.