Hypernatremia is when there's too much sodium and not enough water in your blood. Sodium is one of the electrolytes in your body, found mostly in your blood. It's important for many body functions.

Hypernatremia, or high sodium in the blood, often stems from losing too much water or gaining too much sodium, leading to an imbalance in your body. Symptoms of hypernatremia include excessive thirst, ...

doctor applying face mask to a hospitalized patient. Hyponatremia and hypernatremia in patients hospitalized for COVID-19 are associated with increased odds of adverse outcomes. Patients hospitalized ...