DSM Library: Diagnostic and Statistical Manual This link opens in a new windowThe most comprehensive, current, and critical resource for clinical practice available to today's mental health clinicians and researchers of all orientations. DSM-5® is used by health professionals, social workers,and forensic and legal specialists to diagnose and classify mental disorders, and is the product of more than 10 years of effort by hundreds of international experts in all aspects of mental health. DSM Library also includes the Handbook of Differential Diagnosis and Clinical Cases as supplementary material.