Urinary incontinence in the elderly varies due to different mechanisms and types, with the two most common categories being genuine urinary incontinence, which is due to neurogenic bladder dysfunction or overactive detrusor muscles, damage to the urethral sphincter, or loss of bladder storage function. These are commonly seen in conditions like chronic stroke, dementia, Parkinson's disease, and psychiatric diseases. The other major category is caused by relaxation of the urethral sphincter or pelvic floor muscles surrounding the urethra, leading to reduced urethral pressure. Incontinence in this category may occur when negative pressure increases, such as during coughing, sneezing, straining during bowel movements, or changing body position. This type of urinary incontinence is more common in elderly women and in elderly men who have had prostate removal, leading to damage to the external urethral sphincter.