<![CDATA[Hyperthyroidism is a condition with excess biosynthesis and hormone secretion by the thyroid gland. One of the secondary causes of hyperthyroidism is hydatidiform mole pregnancy, which is included in Gestational Trophoblastic Disease (GTD). Hyperthyroidism in hydatidiform mole pregnancies occurs due to increased beta-Human Chorionic Gonadotropin (beta-hCG). Increasing beta-hCG level affects stimulation of the thyroid gland, increasing thyroid hormone levels in the serum, which causes thyrotoxicosis. This case is such a rare case. A 22-years-old female, G1P0A0, came complaining of amenorrhea accompanied by vaginal bleeding with abdominal pain, nausea, vomiting and palpitations.accompanied by vaginal bleeding with abdominal pain, nausea, vomiting and palpitations. Physical examination showed tachycardia with a pulse rate of 120 beats per minute. Ultrasound examination of the abdomen showed an anteflexed uterus with a honeycomb appearance. Based on a series of tests, the patient has a hydatidiform mole pregnancy with a risk of impending thyroid storm, indicated by TSH suppression with increased fT4. Beta-hCG can cause hyperthyroidism through cross-reaction with TSH receptors. In patients with hyperthyroidism due to GTD, it is not characterized by the characteristic features often found in Graves' disease. Evacuation with curettage and medication was performed to reduce thyroid hormone and serum beta-hCG levels. Hyperthyroidism is an abnormality that can be found in hydatidiform mole pregnancies. It is important to carry out early detection by examining thyroid function in GTD, proper management, and regular monitoring of thyroid function and beta-hCG in pregnant female to provide comprehensive management and prevent complications that can be caused by hyperthyroidism. ]]>
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