What to do about a 5mm kidney stone?

Flomax (tamsulosin): If you don't have fevers, you can take Flomax (tamsulosin) for 10 days. You have an 80% chance of passing it without surgery.

Depends: If in kidney, lithotripsy is good choice or ureteroscopy in the ureter 90% of all stones 5mm or less will pass on own.

Depends: If it is not bothering you, you leave it alone. You will likely pass it. If it is causing pain, infection or obstruction, it needs to be treated.