I have never been formally diagnosed with Irritable Bladder (IB), but it is a side effect of some chemotherapies-

While researching this side effect, I came across the therapy explained below. I have been trying to retrain my bladder for about three months now (3/06-6/06) and my irritable bladder symptoms are improving.

BLADDER RETRAINING:
Management of urge incontinence usually begins with a program of bladder retraining. Occasionally, electrical stimulation and biofeedback therapy may be used in conjunction with bladder retraining. A program of bladder retraining involves becoming aware of patterns of incontinence episodes and relearning skills necessary for storage and proper emptying of the bladder. Bladder retraining alone is successful in 75% of people treated for urge incontinence.

Bladder retraining consists of developing a schedule of times when you should try to urinate, while trying to consciously delay urination between these times. One method is to force yourself to wait 1 to 1 1/2 hours between urinations, despite any leakage or urge to urinate in between these times. As you become skilled at waiting, gradually increase the time intervals by 1/2 hour until you are urinating every 3 to 4 hours.