There could be a number of reasons why you feel the urgency to pass urine suddenly.

Mrs Brown says she passed urine twice during the night, possibly at 4.30 or 5.30.

Having an enlarged prostate, which is common in older men, can limit the body's ability to pass urine.

The patient may pass less urine and it may be dark in color.

This allows you to pass urine much as you did before surgery.

She claimed that she did not pass urine or any other matter.

The child may pass little or no urine for 12 or more hours.

Typically, these problems passing urine don't occur in men until they are age 50 or older.

You may pass little or no urine for 8 or more hours.

The pad test shows how much urine you pass throughout the day.