Overflow incontinence is best characterized by which feature?

• A. Leakage when bladder is overfilled
• B. Leakage with coughing
• C. Leakage due to external factors like mobility
• D. Urgent leakage after a strong urge

Answer: (A)

Overflow incontinence happens when the bladder isn’t able to empty properly and becomes overfilled. As more urine collects, the rising pressure eventually overcomes the urethral resistance and leaks flow out. This tends to show up as leakage that occurs when the bladder is very full, sometimes with a ongoing dribble and a weak, intermittent stream. It’s often linked to urinary retention or reduced bladder contractility, and you might see a high post-void residual as a clue.

This differs from other types: leakage with coughing or sneezing points to stress incontinence from pelvic floor or sphincter weakness; sudden leakage after a strong urge is urge incontinence from detrusor overactivity; leakage due to mobility or cognitive issues is functional incontinence, where the bladder itself is fine but the person can’t get to the toilet in time.