Hydronephrosis can cause various symptoms, depending upon the severity of the condition. Some common symptoms of this condition include:
Sudden or intense pain in the back or side
Nausea
Vomiting
Frequent or painful urination
Blood in the urine
Weakness or malaise
Fever due to a urinary tract infection
No major change in urine output, although it may be decreased
If you experience any of these symptoms, make sure you reach out to a doctor for diagnosis.