A patient has polyuria and polydipsia,and the urine osmolality is 100 mOsm/kg H₂O.The polyuria and polydipsia are not corrected by intravenous injection of ADH,and the exogenous ADH does not alter urine osmolality.What is the probable disorder in this patient?

Question

A patient has polyuria and polydipsia,and the urine osmolality is 100 mOsm/kg H2O.The polyuria and polydipsia are not corrected by intravenous injection of ADH,and the exogenous ADH does not alter urine osmolality.What is the probable disorder in this patient?

A patient has polyuria and polydipsia,and the urine osmolality is 100 mOsm/kg H₂O.The polyuria and polydipsia are not corrected by intravenous injection of ADH,and the exogenous ADH does not alter urine osmolality.What is the probable disorder in this patient?