# Severe and enduring or treatment-resistant? Results of a multicenter Italian study on the longitudinal course of eating disorders - URL: https://alisanburak.com/en/wcp-2026-posterler/k937 - Language: en - Last updated: not specified - Page title: Severe and enduring or treatment-resistant? Results of a multicenter Italian study on the longitudinal course of eating disorders | WCP 2026 Summary > A history of traumatic experiences and comorbidity were associated with a severe and enduring course, whereas the severity of eating disorder psychopathology w… This page was translated automatically from Turkish. [Read the original](https://alisanburak.com/wcp-2026-posterler/k937) 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 PresentationEating DisordersMulticenter longitudinal cohort # Severe and enduring or treatment-resistant? Results of a multicenter Italian study on the longitudinal course of eating disorders Severe enduring or treatment resistant? results from a multicenter italian study on longitudinal outcomes of eating disorders Presenter: Giovanni Castellini Country: Italy Session: 3220 - CHARACTERIZING EATING DISORDERS: FROM SEVERITY DEFINITIONS TO LONG-LASTING FORMS Date: Thu, 24.09.2026, 18:00 - 18:15 Room: Hall A5 A history of traumatic experiences and comorbidity were associated with a severe and enduring course, whereas the severity of eating disorder psychopathology was associated with treatment resistance, independently of illness duration. The study was conducted to distinguish chronicity from treatment nonresponse in eating disorders and to identify risk factors for treatment nonresponse; the concept of severe and enduring eating disorders refers to patients with longstanding illness, whereas treatment resistance refers to low response rates across treatment attempts. A large cohort of patients diagnosed with anorexia nervosa and bulimia nervosa was enrolled in this multicenter longitudinal study, which involved all major specialized eating disorder centers in Italy. Patients with longstanding eating disorders were assessed, clinical data from their initial presentation were collected, and the same cohort was reassessed at follow-up. A history of traumatic experiences and the presence of comorbidity were associated with a severe and enduring course, whereas the severity of eating disorder psychopathology was associated with treatment resistance, independently of illness duration. The results are discussed in light of the clinical utility of distinguishing severe and enduring illness from treatment resistance and the implications for precision psychiatry. How to cite this study APA 7: Castellini, G., et al. (2026, September 24). Severe enduring or treatment resistant? results from a multicenter italian study on longitudinal outcomes of eating disorders [Symposium presentation]. 26th WPA World Congress of Psychiatry (WCP 2026), Stockholm, Sweden. Vancouver: Castellini G, et al. Severe enduring or treatment resistant? results from a multicenter italian study on longitudinal outcomes of eating disorders [symposium presentation]. 26th WPA World Congress of Psychiatry (WCP 2026); 2026 Sep 23-26; Stockholm, Sweden. Author names and title formatting were generated automatically from the congress system; please check them against the original poster before use. ## On the same topic - [Ergen bir kız hastada anoreksiya nervoza için farkındalık temelli girişim: bir olgu sunumu](https://alisanburak.com/en/wcp-2026-posterler/ev0216) - [Ergenlerde yeme bozuklukları için genişletilmiş gerçeklik temelli müdahaleler: etkililik, kabul edilebilirlik, uyum ve güvenlilik üzerine bir kapsam derlemesi](https://alisanburak.com/en/wcp-2026-posterler/ev0227) - [Kadın paradigmasının ötesinde: ergen erkeklerde anoreksiya nervoza üzerine anlatısal derleme](https://alisanburak.com/en/wcp-2026-posterler/ev0247) - [Izole zihinsel yetiyitimi olan okul öncesi çocuklarda ARFID nasıl görünür? otizm spektrum bozukluğu ile karşılaştırma](https://alisanburak.com/en/wcp-2026-posterler/ev0284) - [Klasik İslam tıbbında köpek ve sığır açlığı: ICD-10 anoreksiya nervoza ve bulimiya nervoza ile karşılaştırmalı bir analiz](https://alisanburak.com/en/wcp-2026-posterler/ev0302) [All WCP 2026 summaries](https://alisanburak.com/en/wcp-2026-posterler) --- Kaynak / Source: https://alisanburak.com/en/wcp-2026-posterler/k937 İletişim / Contact: Bağdat Caddesi, Veli Güneysu Apt. No:453 K:4 D:9, Suadiye / Kadıköy, İstanbul · +90 532 642 95 25 · info@alisanburak.com · https://alisanburak.com/bagdat-caddesi-psikoterapi-iletisim