Reactive psychosis: a classical category nearing extinction?
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Updated: Oct 9, 2026

Implementation of a Real-Time Psychosis Risk Detection and Alerting System Based on Electronic Health Records using CogStack
Published on: May 15, 2020
G S Ungvari1, H C Leung, W K Tang
1Department of Psychiatry, The Chinese University of Hong Kong, SAR, China. gsungvari@cuhk.edu.hk
Abstract:
By presenting two illustrative case histories, the authors stress the importance of the classical category of reactive psychosis which has disappeared from recent international classifications as a distinct nosological entity. Reactive psychosis is essential in the differential diagnosis of acute psychoses as the diagnosis of reactive psychosis has far-reaching therapeutic implications. Clinical and conceptual issues concerning reactive psychosis are briefly reviewed with respect to major classical and modern papers.
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