DSM Library This link opens in a new windowContains the DSM-5, the most current resource for diagnosing and assessing mental disorders. Also included are the DSM-5 Handbook of Differential Diagnosis, a resource for students and clinicians learning the process of psychiatric diagnosis, and DSM-5 Clinical Case Studies which represent the mental disorders presented in the DSM-5 and provide diagnostic concepts, symptoms and severity of each disorder, comorbidities, age of onset and development, dimensionality across disorders, and gender and cultural implications.