Polyhydramnios is excessive amniotic fluid; it is associated with maternal and fetal complications. Diagnosis is by ultrasonographic measurement of amniotic fluid volume. Management is by treating maternal disorders contributing to polyhydramnios . If symptoms are severe or if painful preterm contractions occur, treatment may also include manual reduction of amniotic fluid volume. Causes of polyhydramnios include the following: Idiopathic Fetal malformations (eg, gastrointestinal or urinary ... Find out what you need to know about polyhydramnios and discover its causes, symptoms, treatments, and more. Polyhydramnios is a condition of excess amniotic fluid in the amniotic sac, seen in about 1% of pregnancies. It can be caused by various factors, such as maternal or fetal infections, diabetes, or multiple gestation, and may increase the risk of complications for the fetus and the mother. Polyhydramnios is excessive amniotic fluid; it is associated with maternal and fetal complications. Diagnosis is by ultrasonographic measurement of amniotic fluid volume. Management is by treating maternal disorders contributing to polyhydramnios . If symptoms are severe or if painful preterm contractions occur, treatment may also include manual reduction of amniotic fluid volume. Symptoms and Signs | Diagnosis | Treatment | Key Points |