ABSTRACT
The term OAB was originally proposed by Wein and Abrams in 2000 (7) . The definition is based on urgency, the complaint of a “sudden compelling desire to pass urine that is difficult to defer.” This symptom is usually associated with increased daytime urinary frequency and nocturia (waking at night to pass urine), and may be associated with urge incontinence (urine leakage accompanied or immediately preceded by urgency). OAB patients are often further sub-
classified as OAB wet and OAB dry, on the basis of the presence or absence of associated urge incontinence. The terms urge and urgency are currently under scrutiny; the term urgency incontinence is increasingly being used to replace urge incontinence as being more linguistically exact (8) .
