Cold water helps me pee when I’m locked up with bad paruresis. Had a few times at home where I was having difficulty. Squatted in the shower and ran cold water over my face, head and back and it allowed me to pee
Obviously this hack may not be practical when out and about but it has got me thinking. Maybe using an ice pack or something would work…
Felt like posting this as I have not heard much online about cold water immersion and how it relates to paruresis.
From what I’ve read, cold water immersion works on the parasympathetic nervous system and stimulates the vagus nerve, which plays a part in helping the bladder to relax.
Maybe worth experimenting

Thanks for that. Some people find it helpful to run cold water over the back of their hand. May be worth you trying that? Means in a public toilet you can look as if you are washing your hands, then go for a pee.
Andrew