A 33-year-old woman presents with polyuria and polydipsia. Serum sodium is 150 mEq/L and urine osmolality is low. After water deprivation, urine osmol...

Question

A 33-year-old woman presents with polyuria and polydipsia. Serum sodium is 150 mEq/L and urine osmolality is low. After water deprivation, urine osmolality remains low, but after administration of desmopressin, urine osmolality increases significantly. What is the most likely diagnosis?

Accepted Answer

Central diabetes insipidus

Answer

Primary polydipsia

Answer

Nephrogenic diabetes insipidus

Answer

Psychogenic polydipsia with hyponatremia

Answer

SIADH

us-abim MCQ (SBA): Central diabetes insipidus

A 33-year-old woman presents with polyuria and polydipsia. Serum sodium is 150 mEq/L and urine osmolality is low. After water deprivation, urine osmolality remains low, but after administration of desmopressin, urine osmolality increases significantly. What is the most likely diagnosis?