The American Psychiatric Association (APA) has updated its Privacy Policy and Terms of Use, including with new information specifically addressed to individuals in the European Economic Area. As described in the Privacy Policy and Terms of Use, this website utilizes cookies, including for the purpose of offering an optimal online experience and services tailored to your preferences.

Please read the entire Privacy Policy and Terms of Use. By closing this message, browsing this website, continuing the navigation, or otherwise continuing to use the APA's websites, you confirm that you understand and accept the terms of the Privacy Policy and Terms of Use, including the utilization of cookies.



Introduction | Case 2.1 | Case 2.2 | Case 2.3 | Case 2.4 | Case 2.5 | Case 2.6 | Case 2.7


Schizophrenia is the prototypical psychotic disorder. Not only is it the most common psychosis, but schizophrenia tends to involve abnormalities in all five of the emphasized symptom domains: hallucinations, delusions, disorganized thinking (speech), grossly disorganized or abnormal motor behavior (including catatonia), and negative symptoms. Like the DSM-5 neurodevelopmental disorders, schizophrenia is viewed as a neuropsychiatric disorder with complex genetics and a clinical course that tends to begin during a predictable stage of development. Whereas the neurodevelopmental disorders tend to begin during childhood, symptoms of schizophrenia tend to reliably develop during late adolescence and early adulthood.

Access content

To read the fulltext, please use one of the options below to sign in or purchase access.
  • Institutional Login
  • Sign in via OpenAthens
  • Register for access
  • Please login/register if you wish to pair your device and check access availability.

    Not a subscriber?

    Subscribe Now / Learn More

    PsychiatryOnline subscription options offer access to the DSM-5 library, books, journals, CME, and patient resources. This all-in-one virtual library provides psychiatrists and mental health professionals with key resources for diagnosis, treatment, research, and professional development.

    Need more help? PsychiatryOnline Customer Service may be reached by emailing [email protected] or by calling 800-368-5777 (in the U.S.) or 703-907-7322 (outside the U.S.).