There are several life-threatening causes of<unk>  which is needed to be evaluated, which include sepsis, urethral stricture, dehydration, and shock. The other possible causes of<unk>  can be evaluated by carefully assessing the nature of the symptoms, and obtaining a thorough patient history.
Oliguria differential diagnosis
Pyelonephritis causes
Hematuria other diagnostic studies
Acute kidney injury differential diagnosis
Pyelonephritis differential diagnosis
Pyonephrosis causes
Hematuria other imaging findings
Acute renal failure differential diagnosis