A 14 year old boy presented with low grade fever, anemia, splenomegaly and polyarthritis of the left ankle, left knee and right middle finger for 6 months. Based on the findings, he was diagnosed with Juvenile Idiopathic Arthritis. Juvenile Idiopathic Arthritis is a chronic autoimmune disease characterized by arthritis in children under 16 years of age lasting more than 6 weeks, for which other causes have been excluded. Treatment involves medications like NSAIDs, DMARDs, corticosteroids and biologics to suppress inflammation and maintain function.