[Arterial hypertension, hematuria and renal involvement before chickenpox]. / Hipertensión arterial, hematuria y afectación renal en el período de incubación de la varicela.

Chickenpox in childhood is usually a self-limiting disease with relatively few and benign complications, although serious complications do occur. Renal involvement is uncommon during the course of this disease. We describe a 6-year-old girl who developed clinical glomerulonephritis, with arterial hypertension, hematuria and transient minor disturbance of renal function revealed by creatinine clearance 2 days before the appearance of papulovesicular skin lesions characteristic of chickenpox. The patient recovered spontaneously in 2 weeks.