The risk factors for PTSD can be grouped into two parts: exposure to trauma and personal circumstances. Exposure to trauma can include living through dangerous events, getting hurt, witnessing a dead body, or experiencing childhood trauma. Feeling horror, helplessness, or extreme fear during a traumatic event can also contribute to PTSD. Not everyone who experiences trauma will develop PTSD, but understanding the risk factors can help identify those who may be more susceptible and provide early intervention or support when necessary.