I.                    Schizophrenia: Two or more of: delusions, hallucinations, disorganized speech, grossly disorganized or catatonic behavior, negative sx (only one if delusions are bizarre or the hallucinations have a voice with running commentary or two voices in conversation). Social/Occupational dysfunction. Time course: at least 6 months and at least 1 month of symptoms or less if treated.

a.       Paranoid – preoccupation with one or more delusions or frequent auditory hallucinations

b.      Disorganized – prominent disorganized speech and behavior; flat or inappropriate affect.

c.       Catatonic – at least two types of motoric immobility (catalepsy or stupor), excessive activity, extreme negativism, peculiar movements, echolalia, echopraxia.

d.      Undifferentiated – not any of the above

e.       Residual – Absence of prominent symptoms but continuing evidence of a disturbance.

II.                 Schizophreniform: Similar to schizophrenia above. Time course: at least 1 month but less than 6 months.

III.               Schizoaffective: Mood disorder with symptoms of schizophrenia. During the same period of illness thee have been delusions or hallucinations for at least 2 weeks in the absence of prominent mood symptoms. Time course: two weeks without mood symptoms.

IV.              Delusional: Non-bizarre delusions (real life situations), does not meet criteria for schizophrenia, no marked impairment of behavior (several different types). Time course: at least 1 month duration.

V.                 Brief Psychotic Disorder: Delusions, hallucinations, disorganized speech, grossly disorganized or catatonic behavior, with or without stressor. Time course: at least one day but less than one month with full return to functioning.