For elderly people with urinary incontinence, such as elderly men, the main cause is benign prostatic hyperplasia. Due to the enlargement of the prostate, there is an obstruction at the bladder outlet, which increases the resistance during urination. Urine is not completely expelled and accumulates in large amounts within the bladder. When the pressure reaches a certain level, urinary incontinence occurs. For female patients, the main cause is usually an acute urinary system infection, resulting in localized infections that stimulate the bladder's detrusor muscle, causing it to contract involuntarily and, consequently, leading to urinary incontinence.