A patient has polyuria and polydipsia,and the urine osmolality is 100 mOsm/kg H₂O.After an intravenous injection of ADH,urine volume decreases and urine osmolality increases.What is the probable disorder in this patient?

Question

A patient has polyuria and polydipsia,and the urine osmolality is 100 mOsm/kg H2O.After an intravenous injection of ADH,urine volume decreases and urine osmolality increases.What is the probable disorder in this patient?

A patient has polyuria and polydipsia,and the urine osmolality is 100 mOsm/kg H₂O.After an intravenous injection of ADH,urine volume decreases and urine osmolality increases.What is the probable disorder in this patient?