A 50-year-old man presents with polydipsia, polyuria, and nocturia. His labs show high serum sodium and low urine osmolality. Desmopressin trial impro...

Question

A 50-year-old man presents with polydipsia, polyuria, and nocturia. His labs show high serum sodium and low urine osmolality. Desmopressin trial improves his symptoms significantly. This finding is most consistent with which diagnosis?

Accepted Answer

Central diabetes insipidus

Answer

Nephrogenic diabetes insipidus

Answer

Primary polydipsia

Answer

Diabetes mellitus

Answer

Syndrome of inappropriate ADH secretion

Diabetes Insipidus — MRCP Part 1 MCQ

A 50-year-old man presents with polydipsia, polyuria, and nocturia. His labs show high serum sodium and low urine osmolality. Desmopressin trial improves his symptoms significantly. This finding is most consistent with which diagnosis?