What PTSD is
Post-traumatic stress disorder is a mental health condition that can develop after experiencing, witnessing, or hearing about a traumatic event. Those events include serious accidents, natural disasters, assault, and exposure to warfare.
Fear and distress after trauma are normal, and for most people they settle over the following weeks. Where they persist beyond a month and continue to interfere with daily life, PTSD may be present. About 12 in every 100 Australians will experience PTSD at some time in their lives.
Symptoms can appear immediately after the event, or emerge months and sometimes years later. A delayed onset is common and does not make the connection to the original trauma any less real.