This handbook investigates the complex clinical challenge of treating patients who present with concurrent mental health disorders and substance use issues. Authors Amanda Baker and Richard Velleman, both established experts in clinical psychology and addiction research, synthesize current evidence-based practices to provide a framework for integrated care. The text argues that traditional siloed treatment models are insufficient and proposes a collaborative approach that addresses both conditions simultaneously to improve patient outcomes.

Experts in the field of addiction medicine frequently cite this text as a foundational resource for clinicians working in dual-diagnosis settings. Readers often note the practical utility of the structured clinical guidelines and the clarity with which the authors navigate complex diagnostic intersections.