Post-traumatic stress disorder (PTSD)

Explains what post-traumatic stress disorder (PTSD) is, including possible causes and how you can access treatment and support. Includes tips for helping yourself, and guidance for friends and family.

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What causes PTSD?

The situations we find traumatic can vary from person to person. There are many different harmful or life-threatening events that might cause someone to develop PTSD. For example:

being involved in a car crash
being violently attacked
being raped or sexually assaulted
being abused, harassed or bullied, including racism, sexism and other types of abuse targeting your identity
being kidnapped or held hostage
seeing other people hurt or killed, including in the course of your job, sometimes called secondary trauma
doing a job where you repeatedly see distressing images or hear details of traumatic events, such as in the emergency services or armed forces
traumatic childbirth, either as a mother or a partner witnessing a traumatic birth
extreme violence or war, including military combat
surviving a terrorist attack
surviving a natural disaster, such as flooding, earthquakes or pandemics, such as the coronavirus pandemic
being diagnosed with a life-threatening condition
losing someone close to you in particularly upsetting circumstances
any event in which you fear for your life.

Some people also find their experience of being sectioned or of getting treatment in a mental health ward traumatising.

"I was mugged then about a year later I was on the Tube when the police were trying to arrest someone who had a gun. In neither experience was I physically injured – although in the second one I thought I was going to die and that I was going to see lots of other people die."

Secondary trauma

If you experience symptoms of PTSD while supporting someone close to you who has experienced trauma, this is sometimes known as 'secondary trauma' or 'secondary traumatic stress'.

'Secondary' means that although the original (primary) trauma happened to someone else, the impact it's having in your life is traumatic for you. It doesn't mean it's any less significant than any other kind of PTSD, or any easier to deal with. Our page for friends and family has some tips on looking after yourself.

Repeatedly witnessing or hearing about traumatic events in the course of your job is also sometimes called 'secondary trauma', although this experience is increasingly thought of by professionals as an original (primary) trauma.

Are some people more at risk of PTSD?

Some factors may make you more vulnerable to developing PTSD, or may make the problems you experience more severe, including:

experiencing repeated trauma
getting physically hurt or feeling pain
having little or no support from friends, family or professionals
dealing with extra stress at the same time, such as bereavement, money worries, racism, seeking asylum, homelessness or spending time in prison
previously experiencing anxiety or depression.

If you experienced trauma at an early age or you have experienced long-lasting or multiple traumas, you might be given a diagnosis of complex PTSD. See our page on complex PTSD for more information.

"I was diagnosed by my GP with PTSD a few weeks after the death of my father who died very suddenly, following a family outing to the local pub for lunch. He collapsed in front of us and we had to administer CPR at the scene while waiting for the ambulance. He died later on the way to hospital."

Anyone can experience traumatic events, but you may be particularly likely to have experienced trauma if you: