benign prostatic hyperplasia
"61 yrs old.  I was on Hytrin for 14 years but started having extreme pelvic and back pain.  Tried Rapaflo but that didn't work at all.  Cialis 5mg daily immediately fixed my ED problems, but wasn't a miracle cure for my BPH.  I can now sleep for 4-5 hours instead of 2-3 but urine flow still isn't great.  At first, it caused intense back and pelvis pain from Day 2 thru Day 7, then stopped.   Took pain meds from Day 3 thru 7 which helped immensely.  Fortunately, my insurance agreed to cover this with a small co-pay.  Overall, well worth the trouble and first week's pain."