Pulmonary rheumatoid nodules can resemble cancer or infection, making biopsy and careful imaging critical for accurate ...

Although rare, Sarcoma is a major kind of cancer that develops in the body's connective tissues, such as bone, cartilage, ...

Thumb arthritis refers to the pain in the basal joint of the thumb. The treatment may involve medication, splints, or surgery.

This review discusses the features of oligoarticular, polyarticular, systemic, and psoriatic JIA and enthesitis-related arthritis, as well as advances in treatment for these conditions.

RA primarily affects the joints, but it can also cause symptoms in other areas of the body, such as the skin. Learn how RA can cause rashes, nodules, and other skin problems.

WebMD discusses juvenile arthritis, including types, diagnosis, and treatment options.

Autoimmune arthritis happens when your immune system attacks the lining of your joints. Learn possible symptoms and how it’s diagnosed.

Shoulder lumps and bumps have a variety of potential causes. Learn what those causes could be and how you should go about treatment.

Ring avulsion is a traumatic injury that occurs when a ring is caught on an object and is yanked off your finger suddenly and rapidly, potentially causing severe tissue damage. It requires ...

Rheumatoid arthritis articles from across Nature Portfolio Rheumatoid arthritis is an autoimmune disease that is characterized by inflammation of the joints and the subsequent destruction of ...