Henoch-Schoenlein purpura (HSP) affects approximately 20 in 100,000 children per year and twice as many boys than girls are diagnosed with it usually between 5 and 15 years of age.
Signs and symptoms
HSP has a classic set of symptoms making it relatively easy to diagnose. Unlike other autoimmune diseases HSP affects all children in the same way, although severity of symptoms can vary. The symptoms may appear simultaneously, or sequentially in a random order.
Most children with HSP do not require medication, although simple pain relief might be given if joint symptoms are significant.