Glomerulonephritis in dermatitis herpetiformis. A case study.

A patient with dermatitis herpetiformis, proteinuria and reduced renal function is described. A renal biopsy studied by light and immunofluorescence microscopy revealed a glomerulonephritis with deposits of predominantly IgA and complement C3. Deposits of IgA and C3 were also demonstrated in a biopsy from normal skin, and a common pathway for the skin and renal lesions is suggested.