Post-traumatic stress disorder or PTSD is an anxiety disorder which can develop after a very stressful, frightening or distressing event, or a prolonged traumatic experience.
People naturally feel afraid when in danger, but the legacy of some traumatic events is a change in perception of fear.
They may feel stressed or frightened in day-to-day life.
PTSD can be caused by any traumatic event – including military conflict, serious road accidents, natural disasters, assaults, and muggings.
Patients typically tend to re-experience the event in flashbacks, avoid talking about it, have trouble sleeping, or experience a change in mood.
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