When I was I kid and constantly bullied, I was hurled and launched away when I was using a vertical urinary because the damn bully did not want to wait. I was not able to use a public bathroom properly until I was 20, and it is still difficult. I can only used closed stalls, and if the lock is working properly. I learned to wait more than 6-7 hours without peeing and reduce my intake of liquids.
At 12 we went on a day trip with the class and I had to use a public bathroom again for the first time. It took me so much time that everybody was teasing me when I came out (And I could only pour a few drops).
Things got worse paruresis style in 2004. I was just out of the ER and back in a recovery room. It was the time before the restriction on visitors was established. I had not been able to pee since before the surgery. Now I was weak, needing to pee in a room full of more than eight visitors, and I was given that thing they call a "Rabbit". I just could not. As if I did not have enough issues usually, like to do it with eight people. I spent all the night trying to do it, and failed. The next day I could not take it any more.
So, Here it goes. I guess this is the moment when the victim reunites all the courage and overcomes the fear. Isn't it? It is not. I could not go. The nurse tried everything, even letting the water run. In the end the only solution was to have a catheter inserted in my penis. The shame and feeling of helplessness reached even new levels. When one day later it was removed and I was able to walk, I had to spent two or three days with pain for peeing. Probably it was a bit infected.
After that, I lost the capacity for holding that long. The experience of keeping it for so much time had been so terrible that whenever I moved tracking a bathroom with a good door was mandatory. But at least I can use them.
So how are things now? I still won't use a vertical urinary, but simply because I don't consider them hygienic. If the stall lock is broken, it still takes me more time since I cannot relax, but the worst... I will decline offers for going on trips or to the mountain depending on the availability or restrooms. I have tried it. I may get like 500 metres or more away from the group, looking for a secluded spot and... 100 kilometres of wood and somebody has to come in that precise moment. I don't drink on festivities because I can't pee on the street.
Yup, it's quite awful. Now I am remembering things I had forgotten. Probably there is a tipping point that helps you move forward. Mine was a freaking catheter. never again.
PS: Oh wait, there was that ocassion. It was a bachelor party in a country village with free all the "booze you can drink". I was too drunk and decided to leave when my bladder was at the limit. The walk home was 10 minutes, slowed down by erratic walking. In the end I found a wall covered by darkness and did it there, uninhibited, on the open, watching the stars. I was never so happy when I went home and entered bed. At the next morning I realized two things: some of the pee went to my shoes. I had been peeing in an old abandoned cemetery.