Rheumatic conditions tend to involve pain, aching, stiffness, and swelling in and around one or more joints. The symptoms can develop gradually or suddenly. Certain rheumatic conditions can also involve the immune system and various internal organs of the body.
Some forms of arthritis, such as rheumatoid arthritis and lupus (SLE), can affect multiple organs and cause widespread symptoms.
According to the Canters for Disease Control and Prevention (CDC), millions of adults in the United States have received a diagnosis of some form of arthritis. Of these, 23.7 million people have their activity curtailed in some way by their condition.
Arthritis is more common among adults aged 65 years or older, but it can affect people of all ages, including children.