Rheumatology is a branch of medicine devoted to the diagnosis and treatment of rheumatic diseases. It affects your joints tendons, ligaments, bones, and muscles. It is a subspecialty in internal medicine and pediatrics, which is devoted to adequate diagnosis and therapy of rheumatic diseases. It also investigates the stiffness, joint pain, and different issue of the joints, muscles, and tendons. Branches of rheumatology involves basic research and clinical research, as well as clinical diagnosis, treatment, and long-term management of patients with these illnesses. Physicians who have undergone training in rheumatology are called rheumatologists. Rheumatologist is an expert in the field of nonsurgical treatment of rheumatic illnesses, including autoimmune diseases and especially the many forms of arthritis and joint disease. Rheumatology field is multidisciplinary in nature, which means it relies on close relationships with other medical specialties. Rheumatologists deal mainly with immune-mediated disorders of the musculoskeletal system, soft tissues, autoimmune diseases, and heritable connective tissue disorders.