Why do some people get PTSD and other people do not?

It is important to remember that not everyone who lives through a dangerous event gets PTSD. In fact, most will not get the disorder. Many factors play a part in whether a person will get PTSD. Some of these are risk factors that make a person more likely to get PTSD. Other factors, called resilience factors, can help reduce the risk of the disorder. Some of these risk and resilience factors are present before the trauma and others become important during and after a traumatic event.