Which autoimmune disorder clinically manifests with arthritis or arthralgia, rash, vasculitis, renal disease, hematologic abnormalities, and cardiovascular disease?

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Systemic lupus erythematosus is a systemic autoimmune disease where immune system attacks multiple organs, producing a wide range of features from joints to skin to kidneys and blood vessels. The combination of arthritis or arthralgia, a characteristic rash, vasculitis, kidney involvement (lupus nephritis), hematologic abnormalities (anemia, leukopenia, or thrombocytopenia), and cardiovascular issues (such as pericarditis or other cardiac involvement) is a classic multisystem pattern seen in SLE. These manifestations come from autoantibody production and immune complex deposition that damage various tissues, explaining why so many organ systems can be affected in the same patient.

Other autoimmune disorders listed tend to concentrate on fewer organ systems: rheumatoid arthritis is mainly joint-focused and typically erosive; Sjögren syndrome centers on dryness symptoms; scleroderma emphasizes skin thickening and fibrosis with some internal organ involvement but not the same broad, immune-complex–driven multiorgan picture.