It was just a routine vaccination. As a pediatric nurse, Nikki Lawley had done more than she could count, including with kids like this one, who really didn’t want the shot. But the child turned combative and suddenly headbutted her, snapping her head back against the wall. She didn’t realize it immediately, but the double impact and whiplash would change her life. She’d just sustained a serious traumatic brain injury and now had cervical instability. Headaches, memory loss, insomnia, mood disturbance, anxiety and depression took control of her life.