Lei WT, et al. - Researchers aimed to investigate the incidence and risk factors for recurrent Henoch-Schonlein purpura (HSP). In order to analyze the incidence of recurrent HSP, experts used a 16-year nationwide database. Results demonstrated a low annual incidence of recurrent HSP. Nonetheless, the possibility of recurrence ought to be notified to the children who had underlying allergic rhinitis, presented with renal involvement, and received steroid treatment for > 10 days.