Urinary incontinence is the uncontrollable loss of urine.
Urinary incontinence can occur at any age. The kidneys constantly produce urine. Urine flows through two long tubes, or ureters, to the bladder, where urine is stored. A muscle at the bottom of the bladder stays contracted, or tightened, so urine remains in the bladder until it is full. When the decision is made to urinate, the muscle relaxes and urine flows out.