Snapshot A 9-year-old girl presents to his pediatrican's office by his mother due to fever and joint pain. The mother reports that she has been having knee and wrist pain for approximately 7 weeks. Her pain is worse in the morning and is associated with swelling of the affected joint. She develops a fever daily that later subsides. On physical exam, there is tenderness to palpation of the affected joint. Laboratory studies are significant for an elevated ANA, ESR, and CRP. She is negative for rheumatoid factor. Introduction Clinical definition login to view 9 more bullets Epidemiology login to view 4 more bullets Pathogenesis login to view 4 more bullets Prognosis login to view 5 more bullets Presentation Symptoms login to view 7 more bullets Physical exam login to view 10 more bullets Studies Labs login to view 4 more bullets Diagnostic criteria login to view 1 more bullet Differential Reactive arthritis Rheumatoid arthritis Systemic lupus erythematosus Leukemia Pediatric sarcoidosis Treatment Conservative login to view 3 more bullets Medical login to view 13 more bullets Complications Infection Macrophage-activation syndrome Pericarditis Hemolytic anemia Enarteritis