Schizophrenia classification: Difference between revisions
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Historically, schizophrenia in the West was classified into simple, [[catatonia|catatonic]], hebephrenic (now known as [[Disorganized schizophrenia|disorganized]]), and paranoid. The [[Diagnostic and Statistical Manual of Mental Disorders|DSM]] contains five sub-classifications of schizophrenia: | Historically, schizophrenia in the West was classified into simple, [[catatonia|catatonic]], hebephrenic (now known as [[Disorganized schizophrenia|disorganized]]), and paranoid. The [[Diagnostic and Statistical Manual of Mental Disorders|DSM]] contains five sub-classifications of schizophrenia: | ||
* [[Paranoia#Use in psychiatry|''' | * [[Paranoia#Use in psychiatry|'''Paranoid type''']]: where delusions and hallucinations are present but thought disorder, disorganized behavior, and affective flattening are absent (DSM code 295.3/ICD code F20.0) | ||
* [[Disorganized schizophrenia|''' | * [[Disorganized schizophrenia|'''Disorganized type''']]: named 'hebephrenic schizophrenia' in the ICD. Where thought disorder and flat affect are present together (DSM code 295.1/ICD code F20.1) | ||
* [[Catatonia|''' | * [[Catatonia|'''Catatonic type''']]: prominent psychomotor disturbances are evident. Symptoms can include catatonic stupor and [[waxy flexibility]] (DSM code 295.2/ICD code F20.2) | ||
* '''Undifferentiated type''': psychotic symptoms are present but the criteria for paranoid, disorganized, or catatonic types have not been met (DSM code 295.9/ICD code F20.3) | * '''Undifferentiated type''': psychotic symptoms are present but the criteria for paranoid, disorganized, or catatonic types have not been met (DSM code 295.9/ICD code F20.3) | ||
* '''Residual type''': where positive symptoms are present at a low intensity only (DSM code 295.6/ICD code F20.5) | * '''Residual type''': where positive symptoms are present at a low intensity only (DSM code 295.6/ICD code F20.5) | ||
Revision as of 18:25, 19 March 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Classification Based on Subtypes
Historically, schizophrenia in the West was classified into simple, catatonic, hebephrenic (now known as disorganized), and paranoid. The DSM contains five sub-classifications of schizophrenia:
- Paranoid type: where delusions and hallucinations are present but thought disorder, disorganized behavior, and affective flattening are absent (DSM code 295.3/ICD code F20.0)
- Disorganized type: named 'hebephrenic schizophrenia' in the ICD. Where thought disorder and flat affect are present together (DSM code 295.1/ICD code F20.1)
- Catatonic type: prominent psychomotor disturbances are evident. Symptoms can include catatonic stupor and waxy flexibility (DSM code 295.2/ICD code F20.2)
- Undifferentiated type: psychotic symptoms are present but the criteria for paranoid, disorganized, or catatonic types have not been met (DSM code 295.9/ICD code F20.3)
- Residual type: where positive symptoms are present at a low intensity only (DSM code 295.6/ICD code F20.5)
The ICD-10 recognises a further two subtypes:
- Post-schizophrenic depression: a depressive episode arising in the aftermath of a schizophrenic illness where some low-level schizophrenic symptoms may still be present (ICD code F20.4)
- Simple schizophrenia: insidious but progressive development of prominent negative symptoms with no history of psychotic episodes (ICD code F20.6)