Patient characteristics
Fourteen of the patients enrolled in the study were male (51.9%) while 13 were female (48.1%). The mean age of the patients was 12.3 ± 3.2 (6-18) years. The hospitalization period of the patients was a median of 7 days. Polyarthralgia was the most common complaint (17 patients), followed by arthritis (10 patients) and fever (5 patients). We only had one patient with subcutaneous nodules. There was no patient with the diagnosis of erythema marginatum.