Overactive bladder (OAB) affects 33 million Americans and as many as one in five people over the age of 40 experience symptoms of the disorder, namely sudden urinary urgency and incontinence. Since OAB incidence increases with age, it is expected that the prevalence of OAB will increase further in the developed world as the aging population grows. Diagnosis and treatment of this widespread condition can present many clinical challenges as even the...