DSM-5 in its proposed form presents a significant shift in the approach to diagnosing personality disorders. The diagnostic criteria outlined in DSM-III and DSM-IV and the introduction of axis II were intended to focus attention on these syndromes in clinical practice and to foster research on their diagnosis, epidemiology, psychobiology, clinical course, and treatment. A diagnostic system should be clinically relevant, encompass the spectrum of personality syndromes seen in practice, facilitate their recognition, and still be simple enough to be used by busy clinicians, including those who do not specialize in the assessment and treatment of personality. At the same time, the diagnostic scheme needs to reflect and support progress in research that leads to increased understanding and better treatment of these illnesses. Regrettably, the proposed system for classifying personality disorders is too complicated, includes a trait-based approach to diagnosis without an adequate clinical rationale, and omits personality syndromes that have significant clinical utility.