Most common cause of hypernatremia?: (A) Primary hypodipsia, (B) Carcinoid syndrome, (C) Renal losses, (D) Sweating
Answer is A. Elderly individuals with reduced thirst and/or diminished access to fluids are at the highest risk of developing hypernatremia. Patients with hypernatremia may rarely have a central defect in hypothalamic osmoreceptor function, with a mixture of both decreased thirst and reduced AVP secretion