A 43-year-old man presents with polyuria, polydipsia, and hypernatraemia. Urine osmolality remains low after water deprivation but increases after des...

Question

A 43-year-old man presents with polyuria, polydipsia, and hypernatraemia. Urine osmolality remains low after water deprivation but increases after desmopressin. Diagnosis?

Accepted Answer

Central diabetes insipidus

Answer

Primary polydipsia

Answer

SIADH

Answer

Nephrogenic diabetes insipidus

Answer

DKA

mrcp part 1 MCQ (SBA): Diabetes insipidus differentiation

A 43-year-old man presents with polyuria, polydipsia, and hypernatraemia. Urine osmolality remains low after water deprivation but increases after desmopressin. Diagnosis?