Acute fatty liver and acute pancreatitis rarely complicate pregnancy. Acute pancreatitis may appear isolated but when it is subsequent to acute fatty liver of pregnancy the evolution is in many cases fatal. We report the case of a 26-year-old primigravida, at 25 weeks' gestation, who developed acute fatty liver of pregnancy and acute pancreatitis after an acute viral upper respiratory tract infection, with an unfavorable evolution to death. Establishing the diagnosis was very difficult and it was confirmed only at laparotomy.