Porphyria cutanea tarda can be inherited as a dominant trait or acquired due to liver disease. Sun exposed areas develop blistering (vesicles and bullae), erosions and ulcerations, fragile skin, pigmentary changes, and scarring. Update Date: 04/05/2007Mark Levin, MD, Hematologist and Oncologist, Newark, NJ. Review provided by VeriMed Healthcare Network.