# The CAHOOTS project: Preliminary findings on the course of catatonia and symptom overlap between catatonia, psychosis, and autism spectrum disorder in adult psychiatric inpatients in Sweden - URL: https://alisanburak.com/en/wcp-2026-posterler/k1371 - Language: en - Last updated: not specified - Page title: The CAHOOTS project: Preliminary findings on the course of catatonia and symptom overlap between catatonia, psychosis, and autism spectrum disorder in adult psychiatric inpatients in Sweden | WCP 2026 Summary > Approximately half of catatonia cases in inpatient settings go unrecognized by clinical teams, are most often diagnosed as psychosis, and are associated with h… This page was translated automatically from Turkish. [Read the original](https://alisanburak.com/wcp-2026-posterler/k1371) This page is an AI-assisted Turkish summary of the study presented at the 26th World Congress of Psychiatry. The study belongs to the presenting authors; please refer to the original source when citing it. Symposium PresentationPsychosis and SchizophreniaCross-sectional study # The CAHOOTS project: Preliminary findings on the course of catatonia and symptom overlap between catatonia, psychosis, and autism spectrum disorder in adult psychiatric inpatients in Sweden The cahoots project: preliminary findings regarding outcomes of catatonia and symptomatic overlap between catatonia, psychosis and autism spectrum disorder in swedish adult psychiatric inpatients Presenter: Johan Nyrenius Country: Sweden Session: 2400 - SCHIZOPHRENIA, AUTISM AND CATATONIA: NOSOLOGY, OVERLAP AND DIAGNOSTIC PITFALLS Date: Thu, 24.09.2026, 08:45 - 09:00 Room: Hall A5 Approximately half of catatonia cases in inpatient settings go unrecognized by clinical teams, are most often diagnosed as psychosis, and are associated with high mortality. The study aims to determine the prevalence, diagnostic overlap, clinical presentation, and outcomes of catatonia, an underrecognized condition in inpatient care, in routine clinical practice. In this cross-sectional, naturalistic study, consecutive admissions to two Swedish psychiatric inpatient units were screened using the BFCSI (Bush–Francis Catatonia Screening Instrument). Patients with a BFCSI score of 2 or higher were considered eligible for inclusion and underwent detailed assessment by experienced clinicians; catatonia diagnoses were confirmed using all available clinical and study-specific information. Consenting participants underwent a comprehensive follow-up assessment three months after discharge, and registry-based follow-ups at 1 and 3 years were planned. More than 2,200 admissions were screened between March 2025 and June 2026, and n = 73 consenting participants had been included as of mid-June 2026 (consent rate: 55%). Preliminary analyses indicated that a substantial proportion (35% or more) of patients admitted with catatonia had a diagnosis of autism spectrum disorder and/or schizophrenia, that n = 5 participants (7%) had died, that up to 50% of confirmed catatonia cases may have gone unrecognized by the clinical team, and that most unrecognized cases had been diagnosed as psychosis by the clinical team. In conclusion, catatonia is a severe condition associated with high mortality compared with other psychiatric syndromes; patients with schizophrenia and/or autism spectrum disorder account for a substantial proportion of those affected, and the frequent misidentification of catatonia as psychosis in clinical practice poses a serious risk to patients. How to cite this study APA 7: Nyrenius, J., et al. (2026, September 24). The cahoots project: preliminary findings regarding outcomes of catatonia and symptomatic overlap between catatonia, psychosis and autism spectrum disorder in swedish adult psychiatric inpatients [Symposium presentation]. 26th WPA World Congress of Psychiatry (WCP 2026), Stockholm, Sweden. Vancouver: Nyrenius J, et al. The cahoots project: preliminary findings regarding outcomes of catatonia and symptomatic overlap between catatonia, psychosis and autism spectrum disorder in swedish adult psychiatric inpatients [symposium presentation]. 26th WPA World Congress of Psychiatry (WCP 2026); 2026 Sep 23-26; Stockholm, Sweden. 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