A urinary incontinence that is characterized by a bladder that does not empty completely, resulting in a bladder that is too full, which leads to overflow and unexpected leaking. [ url:https://www.healthline.com/health/overactive-bladder/overflow-incontinence url:https://www.webmd.com/urinary-incontinence-oab/overflow-incontinence url:https://www.health.harvard.edu/bladder-and-bowel/types-of-urinary-incontinence ]