Nexus of Delusions and Overvalued Ideas: A Case of Comorbid Schizophrenia and Anorexia in the View of the New ICD-11 Classification System.

BACKGROUND Schizophrenia and anorexia nervosa are challenging mental disorders. In cases in which the cognitive-affective drivers eliciting abnormal eating behaviors strongly influence diagnostic accuracy and treatment planning, it is important to be extremely thorough in differentiating between the phenomenology of delusions, obsessions, and overvalued ideas. CASE REPORT Here we present an unusual relationship between anorexia nervosa and schizophrenia and also an update on diagnosing them according to the new ICD-11 classification system.