There are two types of incontinence: urge and stress. Urge incontinence usually arises in the context of having bladder outlet obstruction. In men who have a large obstructing prostate the bladder wall can become very thick and stiff which results in high bladder pressures and loss of elasticity which in itself can cause a strong desire to pee that can lead to urinary leakage. The other type of incontinence is stress leakage. This is usually related to prior surgery such as a TURP or radical prostatectomy. Men with stress leakage tend to leak urine when they cough, strain, lift something heavy or are generally exerting themselves more.