Abstract
Neonatal thyrotoxicosis is rare and most of the cases are secondary to maternal Graves’ disease. It is usually transient, but can be associated with significant morbidity and mortality if not recognized promptly and treated adequately. Neonates born to mothers treated with antithyroid drugs or those who receive maternal thyroid blocking antibodies may exhibit normal thyroid function or even hypothyroidism at birth. Since there may not be any obvious symptoms of hyperthyroidism at birth, it may be overlooked. Therefore, such neonates should be evaluated properly and monitored regularly to prevent serious complications of hyperthyroidism. We report a case of a 21-day-old male infant who developed thyrotoxicosis with dyspnea, irritability, tachycardia, and cardiac insufficiency. He was born to a mother who was treated for Graves’ disease with antithyroid drugs during pregnancy. We have also discussed the importance of careful examination and monitoring to prevent the development of clinical hyperthyroidism.
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