Orthopedics
Understanding Arthritis See All About Arthritis and Other Rheumatic Diseases in Understanding Arthritis Arthritis, itself a group of more than 100 different diseases, is 1 category of rheumatic diseases. Read on to learn more about these conditions, and the types of healthcare providers who treat them. ...more Arthritis in Understanding Arthritis Arthritis and other rheumatic diseases are common conditions that cause pain, swelling, and limited movement. They affect joints and connective tissues around the body. Millions of people in the U.S. have some form of arthritis.