Introduction: Overt hyperthyroidism during pregnancy is uncommon, occurring in only 0.7% to 0.9% of pregnancies. The grave disease is the most common cause, accounting for 90–95% of cases. It is characterized by low Thyroid Stimulating Hormone (TSH) and Elevated Levels of Free Thyroxine (T4) and Triiodothyronine (T3). Due to the normal changes in a woman’s body during pregnancy and the different levels of thyroid-stimulating hormones in each trimester, overt hyperthyroidism is difficult to diagnose. Overt hyperthyroidism is associated with adverse maternal-fetal outcomes, including low birth weight, recurrent pregnancy loss, congenital abnormalities, preterm birth, intrauterine growth restriction, preeclampsia, abruptio placenta, and lastly, thyroid storm. Therefore, treatment is required for the management of overt hyperthyroidism during pregnancy, and it is essential to maintain euthyroid status to lessen the severity of the symptoms. Priority should be given to preconception care and achieving euthyroid is recommended prior to conception. Depending on the underlying cause, this can be accomplished through medical management such as antithyroid medication or surgery.