label: Erythropoietic Porphyria
label_lc: erythropoietic porphyria
description: A rare congenital metabolic disorder characterized by an inborn error of porphyrin-heme biosynthesis. It is caused by deficiency of the enzyme uroporphyrinogen III cosynthetase. It results in cutaneous photosensitivity leading to blistering and scarring of the exposed skin areas.