**Selected for 2026 Doody's Core Titles as an Essential Purchase in Rheumatology** With its comprehensive, global coverage of all aspects of diagnosis, screening, and treatment in both adults and children, Firestein & Kelley’s Textbook of Rheumatology remains your reference of choice in this evolving field. The fully revised 12th Edition retains the user-friendly, full color format, providing in-depth guidance in rheumatology with an ideal balance of basic science and clinical application. New editors, new chapters, and new illustrations keep you fully up to date on recent advances in genetics and the microbiome, current therapies, and other rapid changes in the field. Covers everything from basic science, immunology, anatomy, and physiology to diagnostic tests, procedures, physical examination, and disease pathogenesis, manifestations and treatment?including key data on outcomes to better inform clinical decision making Includes new or significantly revised chapters on Pre-Clinical Autoimmunity; The Microbiome in Health and Disease; Physical Therapy and Rehabilitation; Nutrition and Rheumatic Disease; Classification and Epidemiology of Spondyloarthritis; Etiology and Pathogenesis of Osteoarthritis; COVID and Rheumatic Disease; Vaccination in Rheumatic Disease; Autoimmune Complications of Immune Checkpoint Inhibitors for Cancer; and many more Features 1,200 high-quality illustrations, including superb line art, quick-reference tables, and full-color clinical photographs; many new illustrations highlight diseases among racially diverse patients Shares the knowledge and expertise of internationally renowned scientists and clinicians, including new editors Drs. Ted Mikuls and Tuhina Neogi Demonstrates the complete musculoskeletal exam in online videos, including abnormal findings and the arthroscopic presentation of diseased joints An eBook version is included with purchase. The eBook allows you to access all of the text, figures and references, with the ability to search, customize your content, make notes and highlights, and have content read aloud. Additional digital ancillary content may publish up to 6 weeks following the publication date