Is overactive bladder the same as functional urinary incontinence?

No, overactive bladder is a form of urge urinary incontinence. Urge incontinence is a type of urinary incontinence where a person suddenly feels the need expel urine and has just a minute to do so before an accident. Most often, urge incontinence is caused by something else, such as a urinary tract infection or a bladder irritant. However, when no particular cause is known, urge incontinence is then referred to as overactive bladder. Functional urinary incontinence is not normally due bladder issues - rather, something is impeding a person's ability to make to the bathroom on time.