For example, in the Steven Robinson bank robbery case, the mental illness was a transient situational disturbance
; the prosecutor argued that taking a gun with him showed premediation which would negate the defense.
In the DSM-I, the precursor to PTSD was called "traumatic neurosis." In DSM-II, it became "transient situational disturbances
." This vague definition became more specific in the DSM-III, which introduced PTSD-qualifying stressors--a recognizable stressor that would evoke significant symptoms of distress in almost everyone, distress that is generally outside the usual human experience.