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Abstract
Pemphigoid gestationis (PG) is a rare dermal-epidermal autoimmune bullous disease of pregnancy and postpartum, which relapses more seriously and earlier during following pregnancies. PG also occurs in association with trophoblastic tumours or oral contraceptive treatment. The term 'persistent PG' represents the cases where active disease persists for months to many years after delivery. Four cases of persistent PG have been reported to date in the literature. So far, systemic cortico-steroids have been the main PG therapy and the use of cyclophosphamide, dapsone, pyridoxine, methotrexate, plasmapheresis or ritodrine has also been reported, with contradictory results. In this paper are described two patients with persistent PG who were successfully treated with doxycycline (200 mg/day) and nicotinamide (500 mg/day), a treatment that was demonstrated to be safe and efficacious in bullous pemphigoid.