What are the symptoms of urinary obstruction?

Urinary tract obstruction is mainly divided into upper urinary tract obstruction and lower urinary tract obstruction. The obstruction site is different, and the symptoms are also different. Upper urinary tract obstruction mostly occurs above the bladder, causing hydronephrosis, pain in the waist and abdomen, and nausea, vomiting, and decreased urine symptoms in severe cases. The most common cause of lower urinary tract obstruction is prostatic hyperplasia, which mostly occurs in elderly men. There are frequent urination, urgency, incomplete urination, difficulty urinating, and in severe cases, symptoms of urinary retention.