In the video below, Bazak Sharon, MD, assistant professor, Department of Pediatrics at the University of Minnesota, discusses the differential diagnosis of joint swelling in pediatric patients. Dr Sharon comprehensively reviews the distinguishing factors between the presentation of septic arthritis and Lyme arthritis, and then provides updated evidence-based recommendations for the treatment of Lyme arthritis.  Presentations requiring joint aspiration and fluid aspirate analysis are also discussed. 

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