We evaluated the prevalence and the types of infectious foci in oral as well as ear, nose, and throat diseases, and we examined incidence of renal involvement with active treatment for focal infection in children with Henoch-Schönlein Purpura. A total of 96 children who presented at Aichi Children's Health and Medical Center and were diagnosed as having HSP were evaluated for infectious foci in the ear, nose, throat, and oral cavities. Seventy-one of 96 children (74.0%) had some type of infectious lesion, such as sinusitis or tonsillitis, and the prevalence of sinusitis was the highest (51 cases, 53.7%). In 44 HSP patients without renal involvement at the first examination, the incidence of nephritis was lower (13.6%) than in previous reports (17–54%) due to our aggressive intervention for infectious foci.
Nakaseko, H., Uemura, O., Nagai, T., Yamakawa, S., Hibi, Y., Yamasaki, Y., & Yamamoto, M. (2011). High Prevalence of Sinusitis in Children with Henoch-Schönlein Purpura. International Journal of Pediatrics, 2011, 1–3. https://doi.org/10.1155/2011/562638