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Participants answered self\u2010rating questionnaires on admission, at the end of inpatient treatment, and in a 5\u2010year follow\u2010up. Patients with PurD reported lower severity of general psychopathology than patients with AN\u2010bp and lower severity of eating disorder symptoms than patients with AN\u2010bp and BN\u2010p on admission. Eating disorder symptoms of patients with PurD improved less during the course than of the comparison groups. Diagnostic perseverance was stronger in the PurD group than for patients with AN\u2010bp; mortality was higher than for patients with BN\u2010p. Predictors for better outcome differed for the groups. Our results provide new data about the long\u2010term course of patients with PurD and indicate clinical relevance of the disorder. 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