ICD 10 Schizophrenia General Criteria For Diagnosis

There are two commonly used sets of criteria for diagnosing schizophrenia and other mental health disorders: the Diagnostic and Statistical Manual of Mental Disorders (the latest version is known as DSM-IV-TR) and the International Statistical Classification of Diseases and Related Health Problems (known as the ICD-10). The DSM-IV-TR, put out by the American Psychiatric Association, is used in the United States and many other countries around the world. The ICD-10 is from the World Health Organization, and is used in most European countries. There are some differences in the criteria each manual sets forth for diagnosing schizophrenia, but overall there is quite a bit of agreement between the two.

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The ICD-10 defines general criteria for a schizophrenia diagnosis, and then more specifically defines a number of different schizophrenia subtypes. The subtypes are as follows:

  • Paranoid schizophrenia -- characterized by prominent hallucinations and delusions and no or inconspicuous affective symptoms.
  • Hebephrenic schizophrenia, known as Disorganized schizophrenia in the DSM-IV-TR -- characterized by prominent affective changes and thought disorder.
  • Catatonic schizophrenia -- diagnosed through prominent psychomotor disturbances.
  • Undifferentiated schizophrenia -- meets general diagnostic criteria for schizophrenia, but doesn't conform to a particular subtype.
  • Post-schizophrenic depression, which is not a subtype defined by the DSM-IV-TR -- a depressive episode following a schizophrenic episode.
  • Residual schizophrenia -- a chronic stage of schizophrenia with long-term negative symptoms.
  • Simple schizophrenia -- an uncommon disorder without hallucinations or delusions; characterized by negative symptoms without preceding psychosis.

The ICD-10 is not as widely used as the DSM-IV-TR, but may be used in some cases to make a clinical diagnosis of schizophrenia.

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