Originally Posted by JohnBT
"to characterize someone who has suffered from PTSD as mentally unstable or even mentally ill demonstrates ignorance of the condition."
Has suffered or is currently diagnosed? A current PTSD diagnosis is taken from the DSM-IV - soon to be DSM-V in a few months - the APA handbook of mental illnesses. It's been listed since 1980.
The APA and the DSM have no credibility since 1972...