The book "Thyroid Disease in Adults" provides a comprehensive guide to the assessment and treatment of adults with thyroid disorders in daily clinical practice. It covers all important aspects and disorders and includes relevant information on fundamental anatomical, embryological, immunological, and physiological aspects to facilitate a better understanding of disease development, diagnosis, and treatment. The work discusses the currently available biochemical tests and specific diagnostic tools in detail. The most common thyroid disorders are addressed in individual chapters that focus on etiology, pathophysiology, symptoms, diagnosis, and therapy. Numerous high-quality illustrations and concise fact boxes complement the content. The authors are experts with extensive experience in three disciplines and a long-standing interest in thyroid diseases.