Will the mother show any symptoms if the fetus has a neural tube problem?

Typically no.: The mother is generally asymptomatic in most fetal anomalies (including neural tube defects), which makes a reliable prenatal sonogram necessary for detection of these problems before delivery - in order to improve prognosis and streamline care. Occasionally a fetus with open neural tube defect will develop polyhydramnios (increased fluid in the sac) and then cause a large uterus and dyspnea.