Porphyria cutanea tarda in a patient with HIV-infection.

Several recent reports have described porphyria cutanea tarda (PCT) occurring in patients with HIV infection. Current evidence suggests that HIV infection may impair the hepatic cytochrome oxidase system, which could lead to an aberration in porphyrin metabolism and subsequently cause porphyria. We report a case of PCT in an HIV-infected patient who had multiple risk factors for this disorder.