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Is the syndrome clearly defined? Can it be measured and diagnosed reliably? Can it be differentiated from other eating disorders? Is there evidence of syndrome validity?<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Although empirical classification and concurrent validity studies provide emerging support for the distinctiveness of Purging Disorder, questions remain about definition, diagnostic reliability in clinical settings, and clinical utility (i.e., prognostic validity).<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>We discuss strengths and weaknesses associated with various options for the status of Purging Disorder in the DSM\u2010V ranging from making no changes from DSM\u2010IV to designating Purging Disorder a diagnosis on equal footing with Anorexia Nervosa and Bulimia Nervosa. \u00a9 2009 American Psychiatric Association. 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