I can tell you from experience, it is not itchy,
You will feel after you wake up in the recovery room, you will feel like you got punched in your kidney region and it will take to days to recover. The treatment has come a long long way,
Then you go about your life and urinate as usual and the fractured stone pieces, that is a bit uncomfortable with each tiny piece passes out of you. The very hard sharp pieces, cut your insides as they slide out.
You guys with external plumbing has more to pass through than us women.