# Clinical course of cannabis-related psychoses: a nationwide cohort study - URL: https://alisanburak.com/en/wcp-2026-posterler/so104 - Language: en - Last updated: not specified - Page title: Clinical course of cannabis-related psychoses: a nationwide cohort study | WCP 2026 Summary > First-episode psychosis with comorbid cannabis use disorder and cannabis-induced psychosis are associated with higher risks of psychosis-related hospitalizatio… This page was translated automatically from Turkish. [Read the original](https://alisanburak.com/wcp-2026-posterler/so104) Bu sayfa, 26. Dünya Psikiyatri Kongresi'nde sunulan çalışmanın yapay zekâ desteğiyle hazırlanmış Türkçe özetidir. Çalışmanın sahibi sunan yazarlardır; atıf için orijinal kaynağa başvurun. SO104 Kısa Sözlü Poster SunumuPsikoz ve ŞizofreniKohort (ulusal kayıt temelli) # Clinical course of cannabis-related psychoses: a nationwide cohort study CLINICAL TRAJECTORIES IN CANNABIS-RELATED PSYCHOSES – A NATIONWIDE COHORT STUDY Sunan: Antti J. Mustonen Ülke: Finland Oturum: 2790 - PARALLEL SHORT ORAL POSTER SESSIONS: PSYCHOSIS & SCHIZOPHRENIA - Part II Tarih: Thu, 24.09.2026 First-episode psychosis with comorbid cannabis use disorder and cannabis-induced psychosis are associated with higher risks of psychosis-related hospitalization and death than first-episode psychosis without a substance use disorder, but with fewer schizophrenia diagnoses. The study aimed to characterize the long-term clinical course of cannabis-related psychoses. By linking Sweden's nationwide administrative and medical registers (MiDAS, LISA, CDR, NPR, PDR) for 2006–2021, the researchers identified 1,360 individuals (84.3% male) diagnosed with first-episode psychosis with comorbid cannabis use disorder (FEP&CUD), 1,772 individuals (84.1% male) diagnosed with cannabis-induced psychosis (CIP), and matched individuals with first-episode psychosis (FEP) without a substance use disorder (SUD), with follow-up continuing through 2023; annual prevalence of psychiatric diagnoses before and after cohort entry, occupational functioning, medication use, and risks of psychosis-related hospitalization and death were compared. Age at first diagnosis was 26.9 years for FEP&CUD and 26.6 years for CIP. Compared with the FEP group without SUD, the FEP&CUD and CIP groups had higher risks of psychosis-related hospitalization (adjusted hazard ratio, aHR 1.66 [95% confidence interval 1.49–1.86] and 1.47 [1.32–1.64], respectively) and death (aHR 2.02 [1.44–2.82] and 1.80 [1.30–2.50], respectively). Within the two years following cohort entry, schizophrenia diagnoses were recorded more frequently in the FEP group without SUD (10.9–14.4%) than in the FEP&CUD (6.3–7.1%) and CIP (2.4–3.3%) groups. Within 30 days of cohort entry, antipsychotic use was 57% in the FEP group without SUD, 48% in the FEP&CUD group, and 45% in the CIP group, while use of long-acting injectable (LAI) antipsychotics was very low across all groups (approximately 0.3–2.8%); at baseline, 10.96% of the FEP&CUD group and 6.94% of the comparison group received a disability pension. The authors suggest that cannabis-related psychoses may lie on a psychosis spectrum rather than constitute distinct clinical entities, and that these cases require earlier diagnostic attention and more proactive early treatment pathways with greater consideration of LAI options. [Orijinal postere git](https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/299) Bu çalışmaya nasıl atıf yapılır? APA 7: Mustonen, A. J., et al. (2026, September 24). Clinical trajectories in cannabis-related psychoses – a nationwide cohort study [Poster presentation]. 26th WPA World Congress of Psychiatry (WCP 2026), Stockholm, Sweden. https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/299 Vancouver: Mustonen AJ, et al. Clinical trajectories in cannabis-related psychoses – a nationwide cohort study [poster]. 26th WPA World Congress of Psychiatry (WCP 2026); 2026 Sep 23-26; Stockholm, Sweden. Available from: https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/299 Yazar adları ve başlık biçimi kongre sisteminden otomatik oluşturulmuştur; kullanmadan önce orijinal posterle karşılaştırın. ## Aynı konudan - [İlk atak psikoz ve esrar kullanım bozukluğu olan gençlerde yardım arama: Back to Reality video oyun serisinden çıkarımlar](https://alisanburak.com/en/wcp-2026-posterler/ev0002) - [Kimyasal bağımlılığın eşlik ettiği tedaviye dirençli şizofreni hastalarında modern antipsikotiklerin kombine kullanımının klinik sonuçları](https://alisanburak.com/en/wcp-2026-posterler/ev0014) - [Şizofrenide bilişsel gerileme: Sosyal işlevsellik üzerindeki etkisi ve bilişsel iyileştirme olanakları](https://alisanburak.com/en/wcp-2026-posterler/ev0018) - [Ağır kişilerarası şiddet öyküsü olan, şizofrenisi olan ve olmayan bireylerde temel benlik bozukluklarının karşılaştırılması](https://alisanburak.com/en/wcp-2026-posterler/ev0103) - [Yoğun çakra odaklı meditasyonla ilişkili bir ergende akut ve geçici psikotik bozukluk: olgu sunumu](https://alisanburak.com/en/wcp-2026-posterler/ev0231) [Tüm WCP 2026 özetleri](https://alisanburak.com/en/wcp-2026-posterler) --- Kaynak / Source: https://alisanburak.com/en/wcp-2026-posterler/so104 İletişim / Contact: Bağdat Caddesi, Veli Güneysu Apt. 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