No help. My daughter did this. She must have a power bladder, I tell you. She could hold it almost an entire day. It helped-- a little-- that we had a routine of using the potty at bedtime. I don't know what her issues were, she just did not want to pee. Issues with nerves? Not noticing when her bladder was full? I have no idea. She didn't have accidents, ever.
I would have just let this one go, but she not only wouldn't go when we left home for any amount of time, she made the entire trip miserable for everybody. Heaven forbid we went for the weekend. Just miserable.
The tables turned when she was around 5yo when she had the idea herself to undress completely from the waist down so she could spread her legs wide. This avoided the awful drips she hated so much and started getting her comfortable. She started using the potty out and about, trips started getting easier and I let the issue drop. She still has a power bladder, but she doesn't hold it all day. And now her legs are long enough she can position her pants around her ankles and still get that wide stance she prefers, and this has made it even easier when we go out.
Now, at 7yo, the issue has dropped completely.
In fact, she's getting quite "grown up" in so many ways. I told a dumb "joke" the other day I had heard once: "you know you're a grown up when you ask yourself before a long trip whether you need to go to the bathroom or not." Now she said, "I think I'm a grown up now because I decided to use the bathroom first".
Phew!
Anyway, good luck!
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