Among the first comprehensive texts devoted specifically to educating nurse practitioners about Attention-Deficit/Hyperactivity Disorder (ADHD), this work addresses a critical gap in clinical training by focusing on evidence-based assessment and treatment across the lifespan. It provides practical guidance for clinicians working with pediatric, adolescent, and adult populations Written by an interdisciplinary group-including university professors, national ADHD organization leaders, and experienced clinicians such as nurse practitioners, social workers, therapists, and ADHD coaches-the book presents a multidisciplinary perspective on ADHD care. Chapters cover screening, a comprehensive assessment, diagnostic formulation, and treatment planning, including both pharmacologic and non-pharmacologic interventions. Case examples illustrate real-world clinical application and highlight nurse practitioner&led models of care. The text also addresses telehealth delivery, legal and regulatory considerations, health disparities, and the integration of ADHD education into undergraduate and graduate nursing curricula.