Psychotherapy High Wycombe Psychotherapy High Wycombe - Last updated 31 October 2025

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DSM-IV: Brief Psychotic Disorder

This mental disorder is diagnosed when psychotic symptoms such as delusions, hallucinations, ordisorganized or catatonic speech or behavior are present for less than a month and resolvecompletely.

Diagnostic criteria for 298.8 Brief Psychotic Disorder

A. Presence of one (or more) of the following symptoms:

(1) delusions
(2) hallucinations
(3) disorganized speech (e.g. frequent derailmentor incoherence)
(4) grossly disorganized or catatonic behavior Note: Do not include a symptom if it is a culturally sanctioned response pattern.

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.

C. The disturbance is not better accounted for by a Mood Disorder With Psychotic Features, Schizoaffective Disorder, or Schizophrenia and is not due to the direct physiological effects of a substance (e.g. a drug of abuse, a medication) or a general medical condition.
Specify if:
With Marked Stressor(s) (brief reactive psychosis): if symptoms occur shortly after and apparently in response to events that, singly or together, would be markedly stressful to almost anyone in similar circumstances in the person's culture
Without Marked Stressor(s): if psychotic symptoms do not occur shortly after, or are not apparently in response to events that, singly or together, would be markedly stressful to almost anyone in similar circumstances in the person's culture
With Postpartum Onset: if onset within 4 weeks postpartum

Based on the Diagnostic & Statistical Manual of Mental Disorders, 4th edition APA

Also: Schizophreniform Disorder

Research sources

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The online Diagnostic & Statistical Manual of Mental Disorders lists most of the major psychological disorders and illnesses and lists the criteria that must be fulfilled in order for a diagnosis to be made. This resource is not a substitute for proper professional psychiatric diagnosis.