A brain injury, simply put, is an injury to the brain. It can come from something obvious, like a car accident, when someone smashes their head against the windshield. It can also come from something hidden, like a stroke or a brain embolism or a brain tumor.
Brain injures can be open — when the scalp and skull are fractured and you can actually see the brain — or closed – when the skull and is intact and you might not even be able to tell that anything went wrong.
Brain injuries are generally grouped into three categories — Mild, Moderate, and Severe. The severity rating of the injury is based on the initial injury itself, not the long-term effects. Long-term outcomes from brain injury can actually be worse with mild and moderate injuries, than severe ones. That’s a puzzle that a lot of folks haven’t been able to figure out.