How is schizophreniform disorder diagnosed?

If symptoms are present, the doctor will perform a complete medical history and physical examination. Although there are no laboratory tests to specifically diagnose schizophreniform disorder, the doctor might use various diagnostic tests to rule out physical illness as the cause of your symptoms. These tests may be X-rays or blood tests.

If the doctor finds no physical reason for the symptoms, he or she might refer the person to a psychiatrist or psychologist. These are health care professionals who are specially trained to diagnose and treat mental illnesses.

Psychiatrists and psychologists use specially designed interview and assessment tools to evaluate a person for a psychotic disorder. The doctor or therapist bases his or her diagnosis on the person’s report of symptoms and his or her observation of the person’s attitude and behavior.

The doctor or therapist then determines if the person’s symptoms point to a specific disorder as outlined in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV), which is published by the American Psychiatric Association and is the standard reference book for recognized mental illnesses. According to the DSM-IV, a diagnosis of schizophreniform disorder is made if a person has characteristic symptoms that last less than six months.

Last reviewed by a Cleveland Clinic medical professional on 04/21/2014.

References

  • Shelton RC. Chapter 17. Other Psychotic Disorders. Schizophreniform disorder. In: Ebert MH, Loosen PT, Nurcombe B, Leckman JF. eds. CURRENT Diagnosis & Treatment: Psychiatry, 2e. New York, NY: McGraw-Hill; 2008. library.ccf.org Accessed 4/21/2014.
  • Schizophreniform disorder. In: Diagnostic and Statistical Manual of Mental Disorders, DSM-5. American Psychiatric Publishing, Incorporated; 2013.
  • Rowney, R. Psychiatry and Psychology. Cleveland Clinic, Cleveland, Ohio. 4/21/2014.

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