Positive Symptoms

Negative Symptoms

  • Delusions
  • Hallucinations
  • Disorganized thinking
  • Agitation
  • Affective flattening- The person’s range of emotional expression is clearly diminished; poor eye contract; reduced body language
  • Alogia- A poverty of speech, such as brief, empty replies
  • Avolition – Inability to initiate and persist in goal-directed activities (such as school or work)


Tests to diagnose: 

A diagnosis of schizophrenia is made based on a full psychiatric evaluation, medical history, physical exam, and lab tests.


Treatments include antipsychotic medications and various psychosocial treatments. Some of the more commonly used typical medications include:

  • Chlorpromazine (Thorazine)
  • Haloperidol (Haldol)
  • Perphenazine (Etrafon, Trilafon)
  • Fluphenazine (Prolixin).

Other atypical antipsychotics were also developed. None cause agranulocytosis. Examples include:

  • Risperidone (Risperdal)
  • Olanzapine (Zyprexa)
  • Quetiapine (Seroquel)
  • Ziprasidone (Geodon)
  • Aripiprazole (Abilify)
  • Paliperidone (Invega).

For more information visit the following websites

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