After experiencing any startling, terrifying event or the death of a loved one, some people may suffer from post-traumatic stress disorder (PTSD). Fear is a normal emotion both during and after a terrible event. Fear causes the body to go through a number of split-second modifications that aid in defending against or avoiding danger. This normal “fight-or-flight” response is aimed to defend a person from harm. After trauma, almost everyone will have a variety of reactions, although the majority of individuals naturally get over the initial symptoms. PTSD may be identified in those who continue to have issues. Even when they are not in danger, those with PTSD may experience worry or fear.