So sometimes when the urge to pee is really bad it’s bordering on painful, like after a long sleep or car drive, not that much comes out. But then other times when I’m just chilling at home and go for a pee with no urgency I pee like Seabiscuit. What gives? What causes you to need to pee so badly it hurts cuz it doesn’t seem like it’s a volume thing?
In: 1493
Your bladder has an internal (involuntary) and an external (voluntary) sphincter.
As I understand it, If the internal one lets any urine through, that’s when you start getting the urgency sensations, rather than based on how full your bladder is.
It’s just more common for it to let some through when you have the pressure of a full bladder.
Edit: I didn’t understand it that well apparently. See below comment.
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