Experience in management of porphyria cutanea tarda in a tertiary referral Brazilian hospital from 2002 to 2017.

Background: Porphyria cutanea tarda (PCT) is the most common porphyria worldwide. The known acquired precipitating factors that induce PCT include alcoholism, hepatitis C virus infection, human immunodeficiency virus infection, and estrogen intake. Hereditary hemochromatosis is considered an inherited risk factor.