You may feel as if you can't wait to reach a toilet. At times, you may leak urine without any warning at all. A bladder can become overactive because of infection that irritates the bladder lining. The nerves that normally control the bladder can also be responsible for an overactive bladder. In other cases, the cause may be unclear.
Mixed incontinence is often a combination of both conditions above - stress and urge incontinence.
Overflow incontinence occurs when the bladder is allowed to become so full that it simply overflows. This happens when bladder weakness or a blocked urethra prevents normal emptying. An enlarged prostate can result in such blockage. For this reason, overflow incontinence is more common in men than in women. Bladder weakness can develop in both men and women, but it happens most often in people with diabetes, heavy alcohol users, and others with decreased nerve function.