Post Traumatic Stress Disorder (PTSD) is an age-old complaint but has only been labelled as such in the last 20 years or so.
Previously it was called many things, including shell-shock, battle fatigue, anxiety reaction, etc. Over the years there have been many attempts to define this problem and recently the World Health Organisation and the American Psychiatric Association, who publish the two main classification systems in psychiatry, have agreed on the principles included under this term.There are probably many members of No Panic who have one form or another of PTSD.
They may have developed this as a result of a car accident, a physical assault, mugging or a range of other frightening events including, major accidents and disasters.
Read more on nopanic.org.uk