When a person is able to hold their urine, it means that their urinary anatomy (the kidneys, bladder, and nervous system) are working in unison.  Incontinence occurs when there is a disruption to this system thus making it difficult to hold urine.  Urge incontinence is a very common form of incontinence in which a person feels a sudden, urgent need to urinate.  The condition can arise as a result of bladder cancer, an infection in the bladder, bladder inflammation or some other neurological condition.  Medication, diet, bladder retraining, biofeedback therapy and surgery are among some of the treatments of urge incontinence.