This book is an essential resource for mental health professionals or those in training who are seeking to navigate the complexities of separation anxiety across various contexts. This textbook offers a thorough exploration of separation anxiety, including characteristics of the disorder along with common assessment and intervention techniques. The text also discusses cultural differences that impact separation anxiety symptoms. The text also provides practical interventions, including a modular approach tailored for families of young children and information about medication management. Specialized chapters address the unique challenges faced by those who have been impacted by trauma, children in foster care, children with chronic medical conditions, and children on the autism spectrum. Additionally, the book includes a chapter on the presentation and the recommended intervention for separation anxiety in adults. Through evidence-based practices and case studies, this book equips readers with the knowledge and tools necessary to support individuals affected by separation anxiety or diagnosed with separation anxiety disorder. This comprehensive text offers valuable insights for mental health professionals.