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Nocturnal enuresis (bedwetting) is one of the most frequent urological symptoms in children, affecting about 20% of five year olds. It is a heterogeneous disorder with a whole variety of etiologic factors (genetic, endocrinological, neurobiological), particularly a dysfunction of the lower urinary tract. Despite the prevalence of enuresis many questions regarding the complex pathophysiological mechanisms remain unanswered. While nocturnal enuresis per se is clearly not a disease, psychosocial problems have been reported in up to 40% of affected children. Management strategies comprise behavioural and pharmacological approaches, either in isolation or combined. Although expectations were high, especially with pharmacological interventions, the results are usually disappointing with high recurrence rates. Extensive analyses of the available literature on the efficacy of enuresis treatment modalities reveal a poor quality of many trials with a whole range of methodological flaws. Therefore, further comparative studies of adequate methodological quality are needed.

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