Post-traumatic stress disorder is found in people that have suffered a significant traumatic event in the past. This can range from childhood bullying, rape, child abuse, war, law enforcement, or any other terrifying or violent event. Everyone is unique in their ability to process and deal with trauma.
PTSD is a serious disorder that increases the likelihood of suicide or intentional self-harm. Over the course of a lifetime, the odds of suffering from PTSD are roughly 1 in 12. PTSD is quite common, but its severity can vary dramatically.