Korean J Nephrol.
2007 Jul;26(4):455-459.
A Case of Hyponatremia in Hypothyroidism
- Affiliations
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- 1Department of Internal Medicine, Kidney Research Institute, College of Medicine, Hallym University, Seoul, Korea. km2071@unitel.co.kr
Abstract
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Hypothyroidism is widely accepted as a cause of hyponatremia, but severe hyponatremia in hypothyroidism is clinically rare. We report a case of 74-year-old female patient presented with severe hyponatremia and hypothyroidism. Hyponatremia gradually improved with water restriction and hypertonic sodium infusion prior to the initiation of thyroid hormone replacement. After a diagnosis of Hashimoto's thyroiditis had been made, the patient was treated with levothyroxine. She remained well on maintenance dose of levothyroxine with euthyroid and normal serum sodium level.