• Rita Almeida Leite, Tiago Santos, Patrícia Nunes, and Isabel Brandão.
• Department of Psychiatry and Mental Health, Baixo Vouga Hospital Centre, Aveiro, Portugal.
• Rev Assoc Med Bras (1992). 2020 Dec 1; 66 (12): 1736-1741.

IntroductionThe interplay between eating disorders and psychosis is a challenging field to which little attention has been paid. Its study raises conceptual and methodological questions in both areas, making the diagnosis and management of patients difficult. Such questions are addressed and illustrated with a review and case report.MethodsThe authors present the case of a woman with Anorexia Nervosa and with comorbid Shared Psychotic Disorder, based on a literature review regarding the comorbidity between eating disorders and psychosis. The authors conducted a non-systematic review by searching the PubMed database, using the Mesh Terms "anorexia nervosa", "bulimia nervosa", "comorbidity" and "psychotic disorders".ResultsThe findings suggest that studies on the subject are limited by issues regarding data on the prevalence of comorbidities, phenomenological aspects of eating disorders, and the interface and integration with psychotic symptoms.ConclusionsThe case presented illustrates the difficulties in managing a patient with a comorbid eating disorder and psychosis. In order to ensure a rigorous assessment of both psychotic and eating disorder symptoms, the focus should be on the pattern of appearance or emergence of symptoms, their phenomenology, clinical and family background of the patient, and clinical status on follow-up.

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