title: Hydroa vacciniforme.
abstract: Two patients with hydroa vacciniforme, a rare photodermatosis of unknown etiology, demonstrated distinctive scarring and vesiculobullous skin lesions on light-exposed body areas. Results of blood and urine porphyrin studies were normal, and no systemic abnormalities were noted. A small bullous lesion was produced in normal skin in case 1 with 15 times the minimal erythema dose of ultraviolet energy. The conditions of both patients improved while they were taking beta carotene orally.
mesh_terms: D002338:Carotenoids / Q000627:therapeutic use; D002648:Child; D005260:Female; D006801:Humans; D006837:Hydroa Vacciniforme / Q000150:complications / Q000188:drug therapy / Q000473:pathology*; D008027:Light / Q000009:adverse effects; D008297:Male; D010778:Photochemotherapy; D010787:Photosensitivity Disorders / Q000150:complications; D011166:Porphyrins / Q000652:urine; D014466:Ultraviolet Rays / Q000009:adverse effects
chemical_list: D011166:Porphyrins; D002338:Carotenoids