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By Mayo Clinic staff- Age. The disease affects children and young adults, with the majority of cases occurring in children 2 to 11 years of age.
- Sex. Henoch-Schonlein purpura is nearly twice as common in boys as it is in girls.
- Race. White and Asian children are more likely to develop Henoch-Schonlein purpura than black children are.
- Illness. Having an upper respiratory infection or other bacterial or viral illness increases a child's risk.
- Season. Henoch-Schonlein purpura strikes mainly in autumn and spring, and almost never in summer.
References
- Kraft DM, et al. Henoch-Schonlein purpura: A review. American Academy of Family Physicians. http://www.aafp.org/afp/980800ap/kraft.html. Accessed Aug. 10, 2008.
- Dedeoglu F, et al. Management of Henoch-Schonlein purpura. http://www.uptodate.com/home/index.html. Accessed Aug. 10, 2008.
- Dedeoglu F, et al. Clinical manifestations and diagnosis of Henoch-Schonlein purpura. http://www.uptodate.com/home/index.html. Aug. 17, 2008.
- Gibson KL, et al. Corticosteroid therapy for Henoch-Schonlein purpura. Pediatrics. 2008;121(4):870-871.
- Henoch-Schonlein purpura. Vasculitis Foundation. http://www.vasculitisfoundation.org/HenochSchonleinpurpura. Accessed Aug. 10, 2008.
- Weiss PF, et al. Effects of corticosteroid on Henoch-Schonlein purpura: A systematic review. Pediatrics. 2007;120(5):1079-1087.
- Henoch-Schonlein Purpura. National Kidney and Urologic Diseases Clearinghouse. http://kidney.niddk.nih.gov/kudiseases/pubs/HSP. Accessed Aug. 10, 2008.