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Preconception advice to hyperthyroid women

Uncontrolled or untreated hyperthyroidism in pregnancy may have adverse outcomes both in mother as well as her fetus. The mother is at increased risk of miscarriage, abruptio placentae, heart failure, and thyroid storm. The neonate is at increased risk of still birth or developing fetal and neonatal hyperthyroidism. Women with Graves' disease or those suffering from any other causes of hyperthyroid should be given reassurance and preconception advice before their becoming pregnant. Antithyroid drugs are the main therapy for maternal hyperthyroidism. This article shall focus on the choice of antithyroid medication that can be used in different trimesters of pregnancy. The patient should also be reminded to undergo thyroid function test in the postpartum period as well.