This is an idiopathic purpuric ± urticarial rash over buttocks, extensor knees, and ankles associated with: fever and malaise transient arthritis, arthralgia (2/3rds) colicky abdominal pain (50%) ± intussusception gastrointestinal tract bleeding (GITB) → melaena haematuria (renal involvement) (25-50%) → nephrotic syndrome (CRF 2-4%) 75% of cases occur in children under the age of 10 … Continue reading Henoch-Schönlein Purpura (HSP)