This book provides a comprehensive, evidence-based approach to understanding bipolar disorder, integrating current research, clinical guidelines, and practical treatment strategies. It is structured into four sections covering concepts and diagnosis, bipolar disorder in diverse populations and clinical contexts, treatment, and miscellaneous topics. Part 1 explores the classification and diagnosis of bipolar disorder, including distinctions between bipolar and unipolar depression, assessment tools, and cognitive impairments associated with the disorder. Part 2 examines how bipolar disorder manifests across different demographics and clinical contexts, including women, older adults, children, and individuals with comorbid conditions such as ADHD and substance use disorders. Part 3 focuses on both pharmacological and non-pharmacological treatment strategies, addressing the evolution of pharmacotherapy, ongoing debates regarding antidepressant use, and comparisons of international treatment guidelines. Part 4 addresses broader issues such as suicide risk, historical case studies, and the relationship between bipolar disorder and creativity. This book is designed for both clinicians and researchers, offering practical treatment algorithms, case-based discussions, and cultural considerations to enhance understanding and patient care. By synthesizing global perspectives and recent advancements in psychiatric practice, it aims to serve as a valuable resource for psychiatrists, psychologists, postgraduate students, and healthcare providers working in the field of mood disorders.