Urinary incontinence may be caused by a wide variety of things, including urinary tract infection, bladder irritation, certain medications, interstitial cystitis, overactive bladder, pregnancy, and weakened urogenital tract muscles after childbirth.
Chaudhary BN, Chadwick M, Roe AM. "Selecting patients with faecal incontinence for anal sphincter surgery: the influence of irritable bowel syndrome.." Colorectal Dis Aug 2010; 12:750-753. 6 Aug 2010.
Lui PD. "Interstitial Cystitis." The Merck Manuals Aug 2007. 6 Aug 2010.