The duration of a JIA flare varies by individual and subtype. Some children improve within days to weeks, while others may experience longer episodes. Key drivers of flare length include inflammation intensity, triggers (infection, stress, sleep disruption), medication adherence, and whether the current regimen adequately controls disease activity. The operational goal is early detection and treat-to-target adjustment to regain control, because uncontrolled flares increase the risk of joint damage and functional loss. Practical family strategy includes maintaining a symptom log, tracking swelling and morning stiffness, monitoring systemic signs such as fever or rash, and having a clinician-defined action plan. If a flare persists or function declines significantly, reassessment should not be delayed.