Obstetric complications as the first sign of myotonic dystrophy

A patient with undiagnosed myotonic dystrophy presented in pregnancy with a history of severe obstetric and neonatal complications in her two previous pregnancies. Problems arising after cesarean section led to the diagnosis of myotonic dystrophy. The features of this condition and its implications for pregnancy are pointed out. Complications of pregnancy and parturition may be the first symptoms of myotonic dystrophy.