title: An unusual case of purpuric erythropoietic protoporphyria.
abstract: Erythropoietic protoporphyria (EPP) is the most common of the erythropoietic porphyrias. Recent advances in diagnostic laboratory tests have led to the discovery of a number of previously undiagnosed cases. We describe a case of EPP presenting late with a purpuric eruption and discuss the pathogenesis and significance of purpura in EPP.
authors.affiliation: Department of Dermatology, University Hospital of Wales, Cardiff, Crawley Hospital, and Department of Photobiology, St. John's Institute of Dermatology, London, UK.
authors.forename: G K
authors.initials: GK
authors.lastname: Patel
authors.forename: J
authors.initials: J
authors.lastname: Weston
authors.forename: E K
authors.initials: EK
authors.lastname: Derrick
authors.forename: J L
authors.initials: JL
authors.lastname: Hawk
mesh_terms: D002648:Child; D020405:Dermis / Q000473:pathology; D006229:Hand Dermatoses / Q000188:drug therapy / Q000209:etiology* / Q000473:pathology; D006801:Humans; D008297:Male; D017092:Porphyria, Erythropoietic / Q000188:drug therapy / Q000209:etiology* / Q000473:pathology; D011693:Purpura / Q000188:drug therapy / Q000209:etiology* / Q000473:pathology; D013472:Sunlight / Q000009:adverse effects*; D019207:beta Carotene / Q000008:administration & dosage
chemical_list: D019207:beta Carotene