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ICD-10 - Schizoaffective Disorders


[From World Health Organization. The ICD-10 Classification of Mental and Behavioural Disorders: Diagnostic Criteria for Research. Copyright, World Health Organization, Geneva, 1993.] ...

Note: This diagnosis depends upon an approximate “balance” between the number, severity, and duration of the schizophrenic and affective symptoms.
G1. The disorder meets the criteria for one of the affective disorders of moderate or severe degree, as specified for each category.
G2. Symptoms from at least one of the groups listed below must be clearly present for most of the time during a period of at least 2 weeks (these groups are almost the same as for schizophrenia):
  1. Thought echo, thought insertion or withdrawal, thought broadcasting (Criterion G1[1]a for paranoid, hebephrenic, or catatonic schizophrenia);
  2. Delusions of control, influence, or passivity, clearly referred to body or limb movements or specific thoughts, actions, or sensations (Criterion G1[1]b for paranoid, hebephrenic, or catatonic schizophrenia);
  3. Hallucinatory voices giving a running commentary on the patient's behavior or discussing the patient among themselves, or other types of hallucinatory voices coming from some part of the body (Criterion G1[1]c for paranoid, hebephrenic, or catatonic schizophrenia);
  4. Persistent delusions of other kinds that are culturally inappropriate and completely impossible, but not merely grandiose or persecutory (Criterion G1[1]d for paranoid, hebephrenic, or catatonic schizophrenia), e.g., has visited other worlds; can control the clouds by breathing in and out; can communicate with plants or animals without speaking;
  5. Grossly irrelevant or incoherent speech, or frequent use of neologisms (a marked form of Criterion G1[2]b for paranoid, hebephrenic, or catatonic schizophrenia);
  6. Intermittent but frequent appearance of some forms of catatonic behavior, such as posturing, waxy flexibility, and negativism (Criterion G1[2]c for paranoid, hebephrenic, or catatonic schizophrenia).
G3. Criteria G1 and G2 above must be met within the same episode of the disorder, and concurrently for at least part of the episode. Symptoms from both G1 and G2 must be prominent in the clinical picture.
G4. Most commonly used exclusion clause. The disorder is not attributable to organic mental disorder, or to psychoactive substance-related intoxication, dependence, or withdrawal.
Schizoaffective disorder, manic type
  1. The general criteria for schizoaffective disorder must be met.
  2. Criteria for a manic disorder must be met.
Other schizoaffective disorders
Schizoaffective disorder, unspecified
If desired, further subtypes of schizoaffective disorder may be specified, according to the longitudinal development of the disorder, as follows:
Concurrent affective and schizophrenic symptoms only
Symptoms as defined in Criterion G2 for schizoaffective disorders
Concurrent affective and schizophrenic symptoms beyond the duration of affective symptoms

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