Overactive bladder (OAB) is a common and chronic complex of symptoms that increases in prevalence with advancing age and has a known adverse effect on the quality of life. OAB is a highly prevalent condition affecting 16.6% people from Europe. Women are more commonly affected, and there is an increased incidence with age. Studies in the United States suggest a prevalence of up to 43% in women. The use of urodynamics in the diagnosis of OAB remains controversial. Although it is a gold standard diagnostic test for detrusor overactivity, it is an invasive procedure and therefore should be limited to those with refractory OAB.