Getty Images Touching the lives of an average 110 people each day in Aotearoa, traumatic brain injury (TBI) is much more common than any of us would like it to be. Yet it is often misunderstood, underestimated and too easily dismissed as someone else’s problem. We know these injuries – sustained when the brain is damaged by a force such as a fall or a knock – can cause effects ranging from mild, short-term symptoms to serious, long-term disability.