Patients with rheumatoid arthritis should visit the department of rheumatology and immunology, as it is an immune-related disease. The primary mechanism of the disease involves the production of abnormal antibodies in the body, which attack the joints themselves, leading to symptoms such as joint swelling and pain. Additionally, rheumatoid arthritis can also manifest symptoms outside of the joints. The most common of these is interstitial lung disease in some patients, primarily presenting as asthma. Furthermore, some patients may experience kidney involvement, mainly characterized by significant proteinuria.