DCR-10 Criteria

A. A transient disorder of significant severity which develops in an individual without any apparent mental disorder in response to exceptional physical and / or mental stress, and which usually subsides within hours or days
B. There must be an immediate and clear relationship between the impact of an emotional stressor and the onset of symptoms
C. Onset is usually within a few minutes, if not immediately
D. The symptoms:

a) show a mixed and usually changing picture; in addition to the initial state of 'daze', depression, anxiety, despair, overactivity, and withdrawal may all be seen, but none predominates for long
b) resolve rapidly (within a few hours at the most); in cases where the stress continues or cannot be reversed, the symptoms usually begin to diminish after 24-48 hrs and are usually minimal after about 3 days