[Epidemiology and etiology of urinary incontinence in the elderly].

Urinary incontinence is an important and common health problem, whose prevalence increases with age. Often quality of life is clearly affected for persons concerned. In the group of elderly individuals (> or =60 years of age) 19.3% of women and 10.4% of men report urinary incontinence. Women most frequently describe urinary stress incontinence followed by incontinence with urge symptoms (urge incontinence, mixed incontinence). In men urinary incontinence without any symptoms of stress or urge incontinence is most common followed by incontinence with urge symptoms and stress incontinence. Urinary incontinence in the elderly is rarely due to a single reason but rather due to multiple factors. In urinary stress incontinence, a differentiation can be made between mechanical and functional problems of the sphincter mechanism caused by myogenic, neurogenic, hormonal, or iatrogenic factors as well as changes in connective tissue. In urinary incontinence with urge symptoms, geriatric detrusor function is mostly affected by neurogenic, myogenic, or urothelial factors whereas the detrusor muscle shows characteristic ultrastructural changes. In chronic urinary retention with consecutive urinary incontinence, especially in men infravesical obstruction is more often the reason than a geriatric bladder dysfunction.