What is Henoch-Schönlein Purpura?

• Henoch-Schönlein Purpura (HSP) is the most common form of systemic vasculitis in children Also called IgA vasculitis • Characterized by palpable purpura (vasculitis), arthritis, abdominal pain and kidney disease • Primarily a childhood disease (between ages 3-15), but adults can also be affected • HSP follows a seasonal pattern with a peak during the winter presumably due to association with a preceding viral or bacterial infection