Specify if:
Acute: if duration of symptoms is less than three months.
Chronic: if duration of symptoms is three months or more.

Specify if:
With delayed onset: if onset of symptoms is at least six months after the stressor.

• American Psychiatric Association. (1994). Diagnostic and Statistical Manual of Mental Disorders, (4th ed.) Washington, DC: Author. pp. 427-428.

Note: There are no revisions of this criteria list in the DSM-IV-TR (2000).