How is urinary retention in men treated without catheters?

Medication/surgery. If you are in true retention and can't urinate at all it becomes an emergency. If it's not treated you can have renal failure and die. There are many medications, mainly Alpha blockers (flomax, opens bladder neck) and 5 Alpha reductase inhibitors (proscar, shrinks prostate) that can help. Minimally invasive treatments like microwave can help. For more: @thepeedoc www.Peedoc.Com.