Conclusion:
In conclusion, our case highlights a rarely seen phenomenon in pregnancy. Hyponatremia secondary to polydipsia causing seizures in the peripartum period is an uncommon occurrence. Although severe hyponatremia is not a common cause of seizure in laboring mother, physician should always consider all possible medical and obstetric causes of seizure. In addition, mid-level providers such as midwives need to be educated about the risks of excessive water drinking during pregnancy leading to hyponatremia.