Post-traumatic stress disorder (PTSD) is a particular set of reactions that can develop in people who have been through a traumatic event which threatened their life or safety, or that of others around them.
Post-traumatic stress disorder can affect anybody who has had some sort of traumatic or life changing event, such as a car crash, physical/ sexual/ emotional abuse or personal assaults, natural disasters or the death of a loved one.
Any situation causing emotional, physical or mental trauma can result in PTSD.