12 Types of Arthritis and How They Differ

6. Lupus Arthritis - The Great Imitator's Joint Manifestation

Systemic lupus erythematosus (SLE) affects multiple organ systems, with arthritis being one of the most common manifestations, occurring in approximately 90% of patients with this autoimmune condition. Lupus arthritis typically presents as a non-erosive, symmetric polyarthritis that primarily affects the small joints of the hands, wrists, and knees, though it can involve virtually any joint in the body. Unlike rheumatoid arthritis, lupus arthritis rarely causes permanent joint deformity or bone erosion, though it can lead to reversible joint deformities such as swan neck deformities of the fingers due to ligament laxity. The arthritis associated with lupus is often accompanied by other systemic manifestations including the characteristic butterfly rash across the cheeks and nose bridge, photosensitivity, oral ulcers, kidney involvement, and neurological symptoms. Morning stiffness is common but typically shorter in duration compared to rheumatoid arthritis, usually lasting less than an hour. Laboratory findings include positive antinuclear antibodies (ANA), anti-double-stranded DNA antibodies, and complement consumption, which help distinguish lupus from other forms of inflammatory arthritis. The unpredictable nature of lupus means that arthritis symptoms can flare and remit, often correlating with overall disease activity. Treatment focuses on controlling systemic inflammation with antimalarials like hydroxychloroquine, corticosteroids during flares, and immunosuppressive agents for severe cases, while avoiding medications that might trigger lupus flares.