It is characterized by decreased ability to concentrate urine as a result of resistance to Arginine vasopressin(AVP) action in kidney.[1] The majority of NDI are inherited, but the condition can be also acquired due to medications, biochemical influence, or even obstructive uropathy.[1] The main strategy for NDI is to supply adequate fluid in combination with a low-salt and low-protein diet to minimize the obligatory water excretion. Here, AVP is linked to urinary tract obstruction.