Systemic Juvenile Idiopathic Arthritis (sJIA) is a type of arthritis that primarily affects children. It is characterized by inflammation in the joints and can also cause systemic symptoms such as fever, rash, and fatigue. sJIA is classified as an autoimmune disorder, meaning the body's immune system mistakenly attacks its own tissues. The exact cause of sJIA is unknown, but it is believed to involve genetic and environmental factors. Treatment typically includes medications to reduce inflammation and manage symptoms, such as nonsteroidal anti-inflammatory drugs (NSAIDs) and biologics. Early diagnosis and intervention are crucial for better outcomes in affected children.