Psychosis classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Rim Halaby, M.D. [2]

Overview

Psychosis refers to a clinical presentation including one of more of the following abnormalities: delusions, hallucinations, disorganized speech, disorganized motor function, and negative symptoms. The classification of psychosis depends on the level, number, and duration of symptoms. Psychosis can be classified into: abnormalities limited to one feature of psychosis, schizophrenia spectrum, psychosis caused by specific conditions, and other specific schizophrenia spectrum and other psychotic disorders.

Classification

Shown below is an algorithm depicting the classification about psychosis.

 
 
 
 
 
 
Psychosis
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Abnormalities limited to one feature of psychosis:
- Delusional disorder
- Catatonia
 
Abnormalities limited to one feature of psychosis:
- Delusional disorder
- Catatonia
 
Schizophrenia spectrum
 
Psychosis due to other conditions:
- Drug/substance abuse
- Medical conditions
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Brief psychotic disorder
(Duration of symptoms 1 day-1 month)
 
Schizophreniform disorder
(Duration of symptoms 1-6 months)
 
Schizophrenia or schizoaffective disorder
(Duration of symptoms > 6 months)
 
 
 
 

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