What are the key diagnostic criteria for schizoaffective disorder according to the DSM-5?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 17 August 2025Updated: 17 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), provides diagnostic criteria for schizoaffective disorder as part of its classification of psychotic disorders . Schizoaffective disorder is diagnosed according to specific criteria within the DSM-5 framework, which is one of the diagnostic criteria sets used for this condition . The DSM-5 also defines and describes schizophrenia, a related psychotic disorder . While the DSM-5 outlines specific criteria for schizoaffective disorder, the provided context confirms its role as a key diagnostic reference for this and other psychotic conditions .

Key References

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