Although nonneuropathic bladder sphincter dysfunction in children is frequently encountered, there is no consensus on the assessment of children presenting with this problem. An example is given of how these children can be assessed. After a noninvasive screening consisting of history, voiding diary, clinical examination, urinalysis, ultrasound and uroflowmetry, those children that will benefit from further videourodynamic studies are selected. Videourodynamics help to describe accurately the filling phase dysfunction and the voiding phase dysfunction, which helps to outline therapy. By using the described methods we are able to select those patients who will benefit from pharmacotherapy and those who will benefit from urotherapy.