Hypernatremia ismost commonly associated with dehydration; however, when signs of clinical dehydration arepresent in the context of adequate intake, disruption of antidiuretic hormone should be considered.10 DI was suspected due to persistent hypernatremia, elevated serum osmolality, lowurine osmolality, and specific gravity in the setting of increased urine output. Here, AVP is linked to Hypernatremia.