Post-Traumatic Stress Disorder or PTSD can be defined as a kind of nervousness or anxiety that arises in people due to fear after watching or experiencing a dangerous or callous event. There is nothing to be ashamed of. After all, it’s normal to be afraid of inhumane events. But, in the long run, casual fear can transform into a deadly disorder, which can damage your defense mechanism or the ability of your body to get over the fear. This is what happens to people with PTSD. That’s why they fear almost every single possibility of getting hurt.