1. Characteristic symptoms: Two or more of the following, each present for much of the time during a one-month period (or less, if symptoms remitted with treatment).

    • Delusions

    • Hallucinations (visual or audio “voices”)

    • Disorganized speech, rambling, manifestation of formal thought disorder

    • Grossly disorganized behavior (chaotic or frequently emotional) or catatonic behavior

    • Negative symptoms: Lack of emotional response, extreme anxiety, psychotic aggression or suicidal depression

    If the delusions are judged to be bizarre, or hallucinations consist of hearing one voice participating in a running commentary of the patient’s actions or of hearing two or more voices conversing with each other, only that symptom is required above.

  2. Social or 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.

  3. Significant duration: Continuous signs of the disturbance persist for at least six months. (or less, if symptoms remitted with treatment).


Borderline  or Residual Schizophrenia

  • Lesser Delusions, anxiety, impulsiveness, and no psychotic, paranoid, or catatonic


Simple Schizophrenia –

  • Insidious and progressive development of negative symptoms with no psychotic episodes.


Psychotic Schizophrenia –

  • Psychotic symptoms are present


Paranoid Schizophrenia –

  • Delusions or auditory hallucinations are present


Catatonic Schizophrenia –

  • The subject may be almost immobile or exhibit agitated, purposeless movement.



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