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