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{{CMG}}
{{CMG}}


==Overview==
==Classification Based on Subtypes==
==Classification Based on Subtypes==
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:
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* [[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)
* [[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 type''']]: named 'hebephrenic schizophrenia' in the ICD. Where thought disorder and flat affect are present together (DSM code 295.1/ICD code F20.1)
* [[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|'''catatonic type''']]: prominent psychomotor disturbances are evident. Symptoms can include catatonic stupor and [[waxy flexibility]] (DSM code 295.2/ICD code F20.2)
* [[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)  


The ICD-10 recognises a further two subtypes:
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)
* '''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)
* '''Simple schizophrenia''': insidious but progressive development of prominent negative symptoms with no history of psychotic episodes (ICD code F20.6)


==References==
==References==
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[[Category:Psychiatry]]
[[Category:Psychiatry]]
[[Category:Mature chapter]]
[[Category:Mature chapter]]
[[Category:Primary care]]
{{WH}}
{{WS}}

Revision as of 18:24, 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)

References

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