Hello,
The causes of urinary blockage are urinary obstruction like in prostate enlargement, scar tissue, injury (as in a car wreck or bad fall), blood clots,
infection, tumors in the pelvic region, and stones; nerve problem,
infection and surgery. A weak bladder muscle, chronic obstruction, and nerve diseases or injury all can contribute to chronic urinary retention.
Please discuss these possibilities with your urologist and check which ones have been ruled out in your case.