Acute generalized exanthematous pustulosis (AGEP) is a clinical and rare condition characterized by the sudden development of multiple non-follicular sterile pustules that are pruritic, primarily appearing in intertriginous areas. This study reports a case of AGEP during pregnancy in a 24-year-old patient, at a gestational age of 35 weeks and 3 days. She was admitted to the obstetric ward with a presentation of pustular exanthematous lesions on the lips, chest, abdomen, face, and upper limbs. The treatment was initiated with a pulse therapy of methylprednisolone at 1 gram per day for 3 days, and albendazole for 5 days. The patient remained hospitalized until she reached 37 weeks of gestation, and a cesarean section was eventually recommended due to failed induction, and the procedure occurred without complications.