Rheumatoid Arthritis primarily affects which part of the body?

Rheumatoid arthritis is primarily an autoimmune disorder characterized by inflammation in the joints. This chronic condition leads to pain, swelling, and stiffness, primarily affecting the synovial joints, which are the joints that allow for movement in the body. Over time, persistent inflammation can result in joint damage and deformity.

While rheumatoid arthritis can have extra-articular manifestations affecting other systems (such as the cardiovascular or respiratory systems), its most significant and defining impact is on the joints. This condition typically starts with small joints, such as those in the hands and feet, and can progress to involve larger joints and lead to systemic complications. Understanding this primary focus on joint involvement is essential for both diagnosis and management of the disease.