Definition of Bladder, overactive

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Bladder, overactive: A condition in which sudden involuntary contractions of the muscular wall of the bladder cause urinary urgency, immediate and unstoppable needs to urinate. Overactive bladder is a form of urinary incontinence (the unintentional loss of urine) and is relatively common, particularly in older adults. Treatment may include pelvic muscle strengthening, behavioral therapy, and medications. Also called urge incontinence.