What is Overactive Bladder (OAB)? How does OAB differ from stress incontinence or leaky urine? The Urology Care Foundation states that as many as 30% of men and 40 percent of women in the United States live with OAB symptoms. Learn about symptoms, causes, risk factors, diagnosis, how a bladder diary might help, and treatment options. Includes information about what types of doctors and providers can help. Backed by the American Urological Association, which has a link to Find a Urologist near me.