A: Many times after suffering a brain injury, the injured will no longer be able to identify and set priorities. The difficulty with being unable to prioritize things is typical. You will find victims spending an inordinate amount of time on a small, simple, and significant task while leaving a major task open and undone. Being impulsive and irritable is highly probable. This wide range of emotions can be particularly difficult for family and friends who don't understand why the injured party can fly into emotional rages.