A. Two (or more) of the following, each present for a significant portion of time during a 1 month period (or less if successfully treated). At least one of these must be (1), (2), or (3):
1. Delusions
2. Hallucinations
3. Disorganized speech (e.g., frequent derailment or incoherence)
4. Grossly disorganized or catatonic behavior
5.  Negative symptoms (i.e., diminished emotional expression or avolition)
B. An episode of the disorder lasts at least 1 month but less than 6 months. When the diagnosis must be made without waiting for recovery, it should be qualified as “provisional.”
C. Schizoaffective disorder and depressive or bipolar disorder with psychotic features have been ruled out because either:
1) no major depressive or manic episodes have occurred concurrently with the active-phase symptoms, or
2) if mood episodes have occurred dur­ing active-phase symptoms, they have been present for a minority of the total duration of the active and residual periods of the illness.
D. The disturbance is not attributable to the physiological effects of a substance (e.g., a drug of abuse, a medication) or another medical condition.
1. Delusions
2. Hallucinations
3. Disorganized speech (e.g., frequent derailment or incoherence)
4. Grossly disorganized or catatonic behavior
5.  Negative symptoms (i.e., diminished emotional expression or avolition)
1) no major depressive or manic episodes have occurred concurrently with the active-phase symptoms, or
2) if mood episodes have occurred dur­ing active-phase symptoms, they have been present for a minority of the total duration of the active and residual periods of the illness.
Schizophreniform disorder
Acute psychosis
Schizophrenia
Schizoaffective disorder
Schizoid personality disorder
Delusional disorder
Schizotypal personality disorder
Borderline personality disorder