Clinical features of HSP
Clinical Manifestations of Henoch–Schonlein PurpuraAdapted from Cassidy JE et al: Textbook of pediatric rheumatology, ed 6, Philadelphia 2011, WB Saunders.
| % At Onset | % Post Onset | Notes | |
|---|---|---|---|
| Purpura | 50–100 | 100 | Normal platelet count |
| Edema | 10–20 | 20–50 | Painful, scrotal edema (13%) |
| Arthritis | 25–70 | 60–85 | Large joints |
| GI | 30 | 85 | Volvulus (<1%), ileal infarction |
| Renal | 15 | 40–50 | Renal failure (2%) |
| GU | 2 | 12–16 | Differential is testicular torsion |
| Pulmonary | ? | 5 (by DLCO) | Abnormal CO diffusion |
| Hemorrhage | ? | Rare | Fatal |
| CNS | ? | Very rare | Headache, encephalitis, seizures |
CNS, central nervous system; DLCO, carbon monoxide diffusing capacity; GI, gastrointestinal; GU, genitourinary.
