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Definition of Overactive bladder

Overactive bladder: A sudden involuntary contraction of the muscular wall of the bladder causing urinary urgency, an immediate unstoppable need to urinate. It is a form of urinary incontinence (the unintentional loss of urine) and affects about 1 in 11 adults, particularly older adults. Treatment may include pelvic muscle strengthening, behavioral therapy, and medications. Also called urge incontinence.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=18373
Last Editorial Review: 6/14/2012

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