Chapter 9: Schizophrenia

• Schizophrenia criteria clarified and updated• Delusional, Schizophreniform and Brief Psychotic Disorder criteria

clarified• Criteria updated for Schizoaffective Disorder

Schizophrenia

• Two or more of the following symptoms for at least 1 month; one symptom should be either 1, 2, or 3:• (1) delusions• (2) hallucinations• (3) disorganized speech• (4) disorganized (catatonic) behavior• (5) negative symptoms (diminished motivation or emotional expression)• Functioning in work, relationships, or self-care has declined since onset• Signs of disorder for at least 6 months; if during a prodromal or residual

phase, negative symptoms or two or more of symptoms

Schizoaffective Disorder

• The DSM-5 requires either a depressive or manic episode rather than simply mood disorder symptoms, as was done in DSM-IV-TR.• Criteria include• Symptoms of a major mood episode are present for a majority of the duration

the illness

Delusional Disorder

• DSM-5 removed criterion that the content of the delusions be “non-bizarre”.

Schizophreniform Disorder and Brief Psychotic Disorder• DSM-5 specifies that symptoms must include either hallucinations,

delusions, or disorganized speech for each of these diagnoses