Henoch-Schonlein purpura

Background

• Usually affects 2-11yr
• 5% of cases are a/w intussusception (abd vasculitis)
• Renal involvement is feared complication
• 95% recover completely

Diagnosis

• Triad:
  • Purpuric rash (lower extremity, buttock)
  • Acute abdominal pain (Diffuse, colicky)
    • Develops after onset of rash
  • Arthritis
    • Migratory, usually involves knees/ankles

DDx

1. Meningococcemia
2. Erythema nodosum
3. Intussusception
4. Rheumatic fever
5. Polyarteritis nodosa
6. SLE
7. RA
8. Drug reaction

Work-Up

1. UA
   1. If +hematuria obtain chemistry

Treatment

• Supportive
• NSAIDs for pain

Disposition

• Outpt management for most w/ rheum f/u

Source

Rosen's, Tintinalli