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Unformatted text preview: The DSM-IV: Selected diagnostic criteria for several Psychiatric disorders. NOTE: The DSM-IV-TR can be accessed free of charge via the Tisch website under Databases and Articles as an e-book. You should refer to this for more complete descriptions. PSYCHOTIC DISORDERS Diagnostic criteria for Schizophrenia A. Characteristic symptoms: Two (or more) of the following, each present for a significant portion of time during a 1-month period (or less if successfully treated): (1) delusions (2) hallucinations (3) disorganized speech (e.g., frequent derailment or incoherence) (4) grossly disorganized or catatonic behavior (5) negative symptoms, i.e., affective flattening, alogia, or avolition Note: Only one Criterion A symptom is required if delusions are bizarre or hallucinations consist of a voice keeping up a running commentary on the person's behavior or thoughts, or two or more voices conversing with each other. B. Social/occupational dysfunction: For a significant portion of the time since the onset of the disturbance, one or more major areas of functioning such as work, interpersonal relations, or self-care are markedly below the level achieved prior to the onset (or when the onset is in childhood or adolescence, failure to achieve expected level of interpersonal, academic, or occupational achievement). C. Duration : Continuous signs of the disturbance persist for at least 6 months. This 6-month period must include at least 1 month of symptoms (or less if successfully treated) that meet Criterion A (i.e., active-phase symptoms) and may include periods of prodromal or residual symptoms. During these prodromal or residual periods, the signs of the disturbance may be manifested by only negative symptoms or two or more symptoms listed in Criterion A present in an attenuated form (e.g., odd beliefs, unusual perceptual experiences). Exclusion of: Schizoaffective and Mood Disorder Substance/general medical condition exclusion NB If there is a history of Autistic Disorder or another Pervasive Developmental Disorder, the additional diagnosis of Schizophrenia is made only if prominent delusions or hallucinations are also present for at least a month (or less if successfully treated). The choice among subtypes depends on the following algorithm: Catatonic Type is assigned whenever prominent catatonic symptoms are present (regardless of the presence of other symptoms); Disorganized Type is assigned whenever disorganized speech and behavior and flat or inappropriate affect are prominent (unless Catatonic Type is also present); Paranoid Type is assigned whenever there is a preoccupation with delusions...
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- Spring '08