We describe a 48-year-old woman with a 12-year history of porphyria cutanea tarda who showed a remarkable exacerbation of her eruptions accompanied by high serum levels of iron and ferritin at menopause. As iron storage is known to be a triggering factor of porphyria cutanea tarda, the possible role of menstruation as natural phlebotomy to prevent porphyria cutanea tarda exacerbation is discussed.