Once taken into the body, any fluids beyond what the body needs, plus those that are filtered out through the kidneys as a natural process, will quickly fill the bladder. Of course, a full bladder will want to be emptied, and it can be very effective in waking the body up for a trip down the hall at night. Another potential, but less likely, candidate is congestive heart failure. If a woman notices that she's short of breath when she lies down, or that her ankles are swollen during the day, she may have congestive heart failure. Of course, if she suspects this, it is important for her to have her symptoms checked out by a physician in order to receive appropriate care.
Overactive bladder is characterized by frequent urination, including nighttime urination.
It may come as a surprise to learn that it is not only possible, but also quite acceptable to see a doctor to check out frequent urination. Changes in fluid intake, bladder re-training, or medication are possible treatments. No matter what the cause, no woman has to tolerate disrupted sleep for a trip across cold floors in a dark house .