Medical dictionary. 2011.
Porphyria — Any of a group of inherited diseases characterized by skin sensitivity to sunlight and/or by intermittent acute attacks of abdominal and nerve pain. The porphyrias are caused by enzyme defects that trigger the overproduction of porphyrins by the… … Medical dictionary
erythropoietic porphyria — porphyria in which excessive formation of porphyrin or its precursors occurs in bone marrow erythroblasts; usually congenital erythropoietic porphyria, but in some classification schemes (those not including a category erythrohepatic porphyria, q … Medical dictionary
erythropoietic protoporphyria — n a rare porphyria usu. appearing in young children and marked by excessive protoporphyrin in red blood cells, blood plasma, and feces and by skin lesions resulting from photosensitivity * * * (EPP) an autosomal dominant disorder due to mutation… … Medical dictionary
