I. Various types of arthritis/arthrosis: rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, seronegative spondyloarthropathy, reactive arthritis/Wright’s syndrome/streptococcal post-infection arthritis, undifferentiated arthritis, osteoarthritis/osteophytes/aging arthritis/degenerative arthrosis, gout/gouty arthritis, various types of arthritis of unknown origin, juvenile arthritis, viral arthritis, infectious arthritis. Systemic rheumatic immune diseases: systemic lupus erythematosus, dry syndrome, dry mouth and eyes, dermatomyositis/polymyositis, scleroderma, leukoplakia/recurrent oral ulcers, mixed connective tissue disease, adult Still disease, antiphospholipid syndrome, overlap syndrome, undifferentiated connective tissue disease, childhood rheumatism. III. Fever to be investigated (cause not known). IV. Immunocompromised. V. Soft tissue rheumatism: If you or your friends present with the following clinical manifestations, a visit to the Rheumatology and Immunology Department is recommended! Recurrent oral ulcers, dry mouth, dry eyes, recurrent parotid enlargement, hair loss, skin erythema, subcutaneous nodules, bleeding spots, photosensitivity, arthralgia, arthritis, muscle pain, weakness, muscle weakness, swelling, prolonged fever, hypocellularity, thrombocytopenia, unexplained anemia, pleural, abdominal, pericardial effusion, liver, kidney, lung and other organ lesions that cannot be diagnosed for a long time.