Schizophreniais officially diagnosed using theDiagnostic and Statistical Manual of Mental Disorders, Fifth Edition(DSM-5) diagnostic manual.

There isn’t a single schizophrenia test or biomarker in the blood that can diagnose this chronic brain disorder.

Schizophrenia affects less than 1 in 100 people.

Doctor talking to patient and taking notes

Johner Images / Getty Images

The following are characteristic symptoms of schizophrenia:

What Are Schizophrenia Spectrum Disorders?

All of these tests can diagnose medical conditions other than schizophrenia that might be causing symptoms of psychosis.

Because there isn’t a single test for schizophrenia, arriving at a diagnosis requires a process of elimination.

How Do You Know If You Have Schizophrenia?

American Psychiatric Association.What is schizophrenia?

National Institute of Mental Health.Schizophrenia.

American Psychiatric Association.Diagnostic and Statistical Manual of Mental Disorders, 5th ed.

Washington, DC; 2013.

In: Fukao K, ed.Psychosis - Phenomenology, Psychopathology and Pathophysiology.

IntechOpen; 2022. doi:10.5772/intechopen.98276

Barch, D. M. (2021).Schizophrenia spectrum disorders.

2020;7(7):602-610. doi:10.1016/S2215-0366(20)30147-4