Is rheumatism an immune system disease?

Rheumatoid arthritis is a disease of the immune system. It is caused by abnormal antibodies produced in the body that attack the skin of our joints. Patients show signs of joint pain and skin lesions. Rheumatic immune system diseases generally refer to diseases that affect bones, joints and soft tissues around them, such as muscles, bursa, tendons, fascia, nerves, etc. It can be infectious or immune according to the cause. At the same time, some degenerative or endocrine factors may also cause rheumatic immune diseases. The most common rheumatic immune diseases are rheumatoid arthritis, systemic lupus erythematosus, Sjogren's syndrome, scleroderma, polymyositis, overlap syndrome, which are diseases belonging to the rheumatic immune system.