Sekula S A, Tschen J A, Rosen T
Am Fam Physician. 1986 Mar;33(3):219-32.
The porphyrias are caused by hereditary defects in the synthesis of heme. Each porphyria is characterized by a unique enzyme defect and measurable elevations of specific heme precursors. While qualitatively normal, these precursors accumulate to cause protean signs and symptoms. Photosensitivity should raise the suspicion of a porphyria, especially in a child or a young adult. The skin, teeth and eyes may provide clues to the diagnosis in some cases.
卟啉病由血红素合成中的遗传性缺陷引起。每种卟啉病的特征是独特的酶缺陷以及特定血红素前体的可测量升高。虽然这些前体在质量上是正常的,但它们会积累并导致多种多样的体征和症状。光敏性应引起对卟啉病的怀疑,尤其是在儿童或年轻人中。在某些情况下,皮肤、牙齿和眼睛可能为诊断提供线索。