Which type of Juvenile Idiopathic Arthritis presents with fever, rash, and lymphadenopathy with variable joint involvement?

• A. Polyarticular JIA
• B. Oligoarticular JIA
• C. Enthesitis-related JIA
• D. Systemic JIA

Answer: (D)

Systemic JIA presents with prominent systemic features alongside arthritis. The key picture is daily fevers, a transient salmon-pink rash, and often lymphadenopathy or hepatosplenomegaly, which accompany or precede joint inflammation. The arthritis itself can be variable—some patients have little until later, while others may show more extensive joint involvement as the systemic symptoms appear. This combination distinguishes it from other JIA types, where the joint pattern is more defining: polyarticular involves many joints, usually in a symmetric pattern; oligoarticular affects only a few joints and typically lacks systemic features; enthesitis-related JIA features Enthesitis and often axial involvement with HLA-B27 and does not present with the same fever/rash profile. So the presence of fever, rash, and lymphadenopathy with variable joint involvement best fits systemic JIA.