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- Satoshi Yamagata, Kazunori Kageyama, Miyuki Yanagimachi, Hiroshi Murakami, and Makoto Daimon.
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, Japan.
- Intern. Med. 2024 May 30.
AbstractWe herein report a patient with herpes zoster (HZ), severe hyponatremia, and hypokalemia. Syndrome of inappropriate antidiuresis (SIAD) leads to euvolemic hyponatremia and hypoosmotic plasma due to inadequate diuresis. Hyponatremia in the current patient was caused by SIAD and associated with HZ of the trigeminal facial nerve (V1). The patient also had hypokalemia, with excessive urinary potassium excretion and elevated cortisol levels. Hypokalemia is caused by hypercortisolemia, which is stimulated by HZ pain. Adequate treatment for HZ and comprehensive pain control play pivotal roles in improving SIAD, cortisol hypersecretion, and the subsequent electrolyte abnormalities.
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