49) An 8-year-old male presents to your office complaining of | Paediatrics videos & books

49) An 8-year-old male presents to your office complaining of a 1-week history of painful knee and elbow joints. On examination, you find a painful, hot, and swollen knee. He also has multiple erythematous macules with pale centers on his trunk and extremities. The laboratory work you order reveals elevated antistreptococcal antibodies.
What is the most likely diagnosis?