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Should schizoaffective disorder be diagnosed cross-sectionally (ICD-11) instead of longitudinally (DSM-5)?

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Published online by Cambridge University Press:  13 August 2021

P. Falkai
P. Falkai*
Affiliation:
Department of Psychiatry and Psychotherapy, Univeristy of Munich, Munich, Germany

Abstract

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Several changes to the classification of schizophrenia and other psychotic disorders have been made to increase the reliability, clinical use and validity of the diagnostic classification which are considered here. A diagnosis of schizoaffective disorder would only be made in ICD-11 when the definitional requirement of schizophrenia is met concurrently with mood symptoms that meet the definitional requirements of a moderate or severe depressive episode, a manic episode, or a mixed episode. This requirement is more restrictive compared to ICD-10, which just required the presence of symptoms of schizophrenia and mood disorder. The total duration requirement would be 4 weeks. A cross-sectional approach was maintained in the ICD-11 for schizoaffective disorders as there is no evidence on how a longitudinal “lifetime” criterion impacts cross-sectional inter-rater reliability, and the reliability of lifetime symptoms’ report by patients and retrospective assessment by clinicians remains unknown.

Disclosure

No significant relationships.

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Abstract
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European Psychiatry , Volume 64 , Special Issue S1: Abstracts of the 29th European Congress of Psychiatry , April 2021 , pp. S4
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Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
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© The Author(s), 2021. Published by Cambridge University Press on behalf of the European Psychiatric Association
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