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Hypocomplementemic urticarial vasculitis: report of a pediatric case
M A Cadnapaphornchai1, F T Saulsbury, V F Norwood
1Department of Pediatrics, University of Virginia Children's Medical Center, Charlottesville, USA.
Pediatric Nephrology (Berlin, Germany)
|April 25, 2000
Summary
Hypocomplementemic urticarial vasculitis syndrome (HUVS) is rare in children. This case highlights HUVS in a pediatric patient, emphasizing its varied presentation and successful dapsone treatment for renal symptoms.
Area of Science:
- Pediatric Rheumatology
- Nephrology
- Immunology
Background:
- Hypocomplementemic urticarial vasculitis syndrome (HUVS) is uncommon in pediatric populations.
- Early diagnosis can be challenging due to overlapping symptoms with other pediatric rheumatic diseases.
Observation:
- A pediatric patient presented with polyarthritis and hypocomplementemia at age 3.
- The patient later developed an intermittent purpuric rash, episodic arthritis, hematuria, and proteinuria.
- Renal biopsy confirmed membranoproliferative glomerulonephritis with membranous features.
Findings:
- Serum complement evaluation indicated classical pathway activation, consistent with HUVS.
- Oral dapsone therapy resulted in improved proteinuria.
Implications:
- HUVS should be considered in the differential diagnosis of pediatric patients presenting with glomerulonephritis, urticarial rash, arthritis, and pulmonary disease.
- This case underscores the importance of comprehensive diagnostic workups for complex pediatric autoimmune conditions.