Criterion A. Presence of at least 1 of the following symptoms. At least 1 of these must be (1), (2), or (3):

1. Delusions
2. Hallucinations
3. Disorganized speech
4. Grossly disorganized or catatonic behavior

Criterion B. Duration of an episode of the disturbance is at least 1 day but less than 1 month, with eventual full return to premorbid level of functioning.

Criterion C. The disturbance is not better explained by major depressive or bipolar disorder with psychotic features or another psychotic disorder such as schizophrenia or catatonia, and is not attributable to the physiological effects of a substance or another medical condition.

Specifiers:

• With marked stressor(s) (brief reactive psychosis)
• Without marked stressor(s)
• With postpartum onset
• With catatonia