Definition: Rheumatology is the branch of medicine, an internal medicine sub-specialty, that deals with diagnosis and treatment of rheumatic diseases. Physicians get board-certified in this domain after doing fellowship and taking the certification exam.
Rheumatologists and fellows in training usually have a combination of textbooks that they build up their knowledge with, prepare and review for the board certification exam. Here are the best recommend books for rheumatology:
Kelley and Firestein's Textbook of Rheumatology
Essential Imaging in Rheumatology
Dubois' Lupus Erythematosus and Related Syndromes
The Washington Manual of Rheumatology Subspecialty Consult
Fundamentals of Musculoskeletal Ultrasound
Atlas of Ultrasound-Guided Musculoskeletal Injections
Rheumatology Board Review
Rheumatology Secrets