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Jornal Brasileiro de Nefrologia

Print version ISSN 0101-2800On-line version ISSN 2175-8239

J. Bras. Nefrol. vol.38 no.4 São Paulo Oct./Dec. 2016

http://dx.doi.org/10.5935/0101-2800.20160070 

Review Article

Mental disorders in children and adolescents with lower urinary tract dysfunction

Renata Cristiane Marciano1 

Maíra Glória de Freitas Cardoso1 

Mônica Maria de Almeida Vasconcelos1 

Jonas Jardim de Paula2 

Eduardo Araujo Oliveira1 

Eleonora Moreira Lima1 

1Universidade Federal de Minas Gerais.

2Faculdade de Ciências Médicas de Belo Horizonte.

Abstract

Lower urinary tract dysfunction (LUTD) affects about 2-25% of the pediatric population and is associated with the presence of emotional and behavioral disorders. The purpose of this literature review was to identify studies focusing on mental disorders in children and adolescents with LUTD. The prevalence of these disorders is high - ranging from about 20 to 40% - in children with symptoms of LUTD and comorbidities. The presence of emotional and behavioral symptoms impact in the treatment of the dysfunction, self-esteem of patients and caregivers. Despite the association between mental/behavioral disorders and LUTD be well documented in the literature, the investigation of psychiatric symptoms in clinical practice is still not common and should be stimulated.

Keywords: adolescent; child; mental disorders; nocturnal enuresis; urinary incontinence

Introduction

Lower urinary tract dysfunction (LUTD) is an umbrella term that encompasses a spectrum of disorders affecting bladder filling and/or voiding in the absence of neurologic disease or obstructive uropathy. A lack of consistency in terminology has resulted in a reported prevalence of symptoms of LUTD in children ranging from 2% to 25%.1,2

According to the consensus published by the International Children's Continence Society (ICCS), LUTD symptoms are categorized based on whether they are related to bladder filling or voiding. The following are storage symptoms: increased or decreased voiding frequency; incontinence; urinary urgency; nocturia. Voiding symptoms include: hesitancy; straining; weak stream; intermittent stream; urinary retention; feeling of incomplete voiding; postmicturition dribble; dysuria. The comorbidities usually associated with LUTD are urinary tract infection, asymptomatic bacteriuria, constipation, and/or fecal incontinence, vesicoureteral reflux, emotional disorders, and intellectual disability.3

In addition to posing risk to the upper urinary tract, LUTD may cause embarrassment and emotional impact on parents and children due to the frustration inherent to dealing with urinary incontinence. An important association between LUTD and mental disorder has been described in a number of studies.

The prevalence of behavioral disorders in children diagnosed with psychiatric comorbidities is significant: 20-30% of them suffer from nocturnal enuresis; 20-40% have diurnal incontinence; and 30-50% have fecal incontinence.4,5 In children and adolescents from the general population the prevalence of psychiatric disorders is of approximately 10%.6

Despite the increased frequency of psychiatric disorders observed in this population, symptoms are usually not targeted in the care delivered to these patients, in what might be categorized as neglect toward children with LUTD in an important area of their lives.4

Objective

This study aimed to review the literature on the topic in order to assess the degree of attention paid to behavioral and emotional symptoms in clinical practice as per the ICSS recommendations.3

Method

The following keywords were used in a search for papers published on PubMed: Mental Disorders - Behavior Disorders, Neuropsychiatric disorders, Depression Attention Deficit Disorder, Urination Disorders - Enuresis, Urinary Incontinence, Urinary Retention, Daytime Wetting, Bedwetting, Bowel problems, Dysfunctional elimination syndrome, Overactive bladder syndrome, Voiding postponement, dysfunctional voiding, Adolescent, Child. Papers published in English and Portuguese within the last ten years and papers cited in the papers listed in the original search results were included.

Discussion

In the last decade, the relationship between lower urinary tract dysfunction and psychiatric disorder has been extensively studied. According to Franco,7 the central nervous system (CNS) is involved in the etiology of most cases of pediatric LUTD, switching from a longstanding vesicocentric model to understand the disease into a neurocentric one. Changes in CNS function and anatomy have also been associated with psychiatric disorders. The neurocentric model facilitates the comprehension of the amply documented association between depression, enuresis, and encopresis.7

Von Gontard and Equit8 stressed the association between altered CNS activity and different forms of incontinence and psychiatric disorders such as attention deficit and hyperactivity disorder (ADHD). Areas of the brain such as the insula, the anterior cingulate cortex, and the prefrontal cortex are responsible for bladder control and monitoring9 and have been implicated in ADHD and LUTD.8

Hyde et al.10 considered enuresis during childhood a premorbid developmental marker of schizophrenia. In a group of patients with schizophrenia, 21% had enuresis during childhood versus 11% of their siblings and 7% of healthy controls. Neuroimaging studies revealed global grey matter volume reductions in schizophrenic and non-schizophrenic individuals with a history of enuresis during childhood.

One might infer that, at least in schizophrenic individuals, the anomalous development of the right superior temporal gyrus was associated with enuresis during childhood. Absence of incontinence in later stages of life suggests functional adaptation. According to Franco,7 these findings support the idea that the frontal lobes are closely involved in the development and maintenance of bladder control.

In another study, adult patients with urinary urgency had increased anterior cingulate cortex activity levels and decreased activity in the orbitofrontal cortex (OFC).11 Yang et al.12 compared children with ADHD to children with ADHD and enuresis, and observed the latter had shorter response times in neuropsychological tests devised to assess attentional performance, revealing they had less inhibitory control. Understanding this pathophysiological correlation and the importance of treating psychiatric comorbidities are key steps in attaining more promising therapies for patients with LUTD.7

Most of the studies designed to look into the psychiatric symptoms of patients with LUTD were based on the Child Behavior Checklist (CBCL), a questionnaire developed to assess the social skills and behavioral problems of individuals aged 6-18 years.13 Although the CBCL is not a diagnostic tool, elevated scores in its subscales are highly sensitive and specific in characterizing some mental disorders in children and adolescents.

The CBCL groups behavioral problems into internalizing - the summation of scores related to anxiety/depression, withdrawn-depressed, and somatic complaints - and externalizing - the summation of scores in delinquent behavior and aggressive behavior - problem scales.14

Kuhn et al.15 reported superior prevalence of clinical-range scores in the CBCL for children and adolescents with LUTD (41%) when compared to healthy controls (9%). There seems to be a distinct pattern between the occurrence of internalizing and externalizing symptoms in this group of children. The prevalence of the first - depression and anxiety disorder - was 29% in the group with LUTD versus 6% in healthy controls. The prevalence of externalizing problems - conduct disorder and attention deficit and hyperactivity disorder - was 35% versus 0%, respectively.15

Children with LUTD also had higher rates of depressive, aggressive, and inattentive symptoms.16 The rates of psychiatric comorbidity in a group of 1001 children with bladder and bowel dysfunction were up to six times higher than the rates seen in the general population - 43% had clinical-range scores in the CBCL, 36% with externalizing problems and 33% with internalizing problems.17 The same author described higher rates of symptoms of oppositional defiant disorder (ODD) in children with incontinence than in healthy controls (19.5% vs. 5.2%).18

In addition to the elevated prevalence of mental disorders in the population with LUTD, the occurrence of the phenomenon varied depending on the type of lower urinary tract dysfunction: 56% of the children postponing voiding had clinical-range scores in the CBCL versus 24% of the children with urinary incontinence.15 In a group of preschoolers, Niemczyk et al.19 saw externalizing disorders in 14.5% of the individuals with monosymptomatic nocturnal enuresis, whereas children with diurnal incontinence and continent children had similar prevalence rates (9.5%).

Enuresis

Involuntary urination while asleep is called nocturnal enuresis. Children who wet their beds but have no other urinary tract symptoms have monosymptomatic nocturnal enuresis (MNE). Children who urinate on their beds while asleep and have symptoms of lower urinary tract dysfunction are diagnosed with non-monosymptomatic nocturnal enuresis (NMNE).20

Pediatric enuresis appears to be strongly associated with attention deficit and hyperactivity disorder (ADHD), as described by Baeyens et al.21 These authors reported a prevalence of 15% of combined ADHD (inattentive/hyperactive) in a population of children with enuresis and 22.5% of predominantly inattentive ADHD, while in the general pediatric population the prevalence of ADHD ranged between 3-5%.6

Shreeram et al.22 looked into the prevalence of enuresis in the United States and found a strong association with ADHD, in which children with enuresis had a 2.88-fold chance of having ADHD when compared to healthy controls. Yang et al.23 reported that boys with elevated scores for symptoms of ADHD tended to have higher scores for LUTD in the Dysfunctional Voiding Symptom Score (DVSS). The DVSS is a scale used to assess lower urinary tract symptoms in the general population.24

Lower urinary tract symptoms correlated with scores in the Swanson, Nolan e Pelham-IV (SNAP-IV), a scale used to assess symptoms of ADHD and ODD.25

Another study found that children with MNE had a 2.5-fold chance of presenting emotional disorders than controls.26 Children with NMNE had even higher scores for behavioral problems when compared to a group of individuals with MNE.17,26 A prospective study enrolling more than 8,000 children, The Avon Longitudinal Study of Parents and Children (ALSPAC) by Joinson et al.,27 reported a positive association between difficult temperament and behavioral problems in early childhood and occurrence of enuresis in school years.

Diurnal enuresis

Children with diurnal enuresis seem to be more affected by psychological problems. They had about twice the rate of externalizing disorders than children without diurnal enuresis. The following disorders stood out from the list: ADHD - 24.8%; ODD - 10.9%; conduct disorder - 11.8%.

Twenty-nine percent of the children with diurnal enuresis had internalizing disorders.28 Another large epidemiologic study with approximately 8,000 children found that individuals suffering from diurnal enuresis (10.4%) had more gastrointestinal, urinary, and psychological symptoms than controls.29 Kuhn et al.15 reported that 49% of the children with diurnal enuresis met the diagnostic criteria for at least one mental disorder described in the International Classification of Diseases - 10th revision (ICD-10).

A study carried out with 138 children diagnosed with urinary incontinence described associations between psychiatric symptoms and worse quality of life (QOL), older age, being non-Caucasian, and female sex. Worsening clinical condition was not associated with decreases in QOL.30 Joinson et al.31 looked at predictors for poor sphincter control - urinary and fecal incontinence - and described developmental delays, difficult temperament, and maternal depression and anxiety as risk factors.

Von Gontard et al.32 estimated that behavioral disorders, oppositional defiant disorder and attention deficit and hyperactivity disorder in particular, were twice as prevalent in individuals with LUTD than in the general population. Another study found that children with diurnal enuresis had 4.4-fold risk of ADHD.33

Impact

ADHD negatively affects resolution rates of LUTD; children with ADHD had more trouble complying with LUTD therapy and were less responsive to alarm interventions than controls.34

Approximately 65% of the children with enuresis had clinical-range scores in the Child Behavior Checklist (CBCL) and higher rates of social and behavioral problems.32,35 Üçer & Gümüş36 studied a group of children with monosymptomatic nocturnal enuresis (MNE) and found higher rates of poor quality of life, poor sleep, and depression.

The authors of a prospective study evaluated the presence of psychiatric symptoms before and after LUTD therapy and were unable to find changes in the prevalence of internalizing problems. However, externalizing symptoms and total problems in the CBCL decreased (14% to 7%; and 23% to 8%, respectively) in the group with voiding dysfunction. The behavioral symptoms of the individuals in the group with urinary urgency did not ameliorate significantly.37

Treating patients with ADHD and LUTD was more difficult than treating individuals with LUTD alone.7 Baeyens et al.38 followed a group of patients for two years and reported persistence of enuresis in 72.5% of the patients with ADHD, suggesting that individuals with ADHD had more trouble complying with treatment. Even in cases in which enuresis resolved, ADHD persisted, indicating that the symptoms reflected the existence of a neurodevelopmental disorder independent from enuresis. Therefore, one might infer that ADHD interferes with the treatment and prognosis of enuresis.

However, children offered proper treatment for ADHD and children without ADHD have similar rates of urinary incontinence, implying that the treatment of ADHD might be associated with positive effects on the resolution of incontinence.39 The best mode of treatment for incontinence associated with ADHD appears to be individualized multimodal therapy, which includes behavior modification combined with drug and/or biofeedback therapy and provides for increased effectiveness when compared to monotherapy.40

In a study on stressful events of childhood, nocturnal enuresis was rated as difficult by 36.7% of the children and ranked eighth among stressful life events.41 The stress experienced by many of the children with LUTD was linked to incontinence and subclinical motional symptoms that compromised the treatment and prognosis of LUTD.4

The impacts of the dysfunction appear to be felt by parents and caregivers alike. De Bruyne et al.16 reported increased levels of stress in parents of children with LUTD and behavioral disorders. Mothers of children with enuresis had poorer quality of life and more anxiety symptoms than the mothers of controls. Treatment of enuresis led to significant improvements in the QOL of mothers and children.42 Table 1 lists the main quantitative studies published since the year 2000 to address the psychosocial involvements seen in pediatric patients with LUTD.

Table 1 List of quantitative studies on psychosocial involvement of pediatric patients with lutd 

Study Design Materials Instrument Results
Erdogan et al.35 Istambul Cross- sectional 53 children with nocturnal enuresis, 303 controls CBCL Children with nocturnal enuresis:
- Higher rates of social and behavioral problems
Joinson et al.28 UK Longitudinal (ALSPAC) 8213 school-age children (7 to 9 years) DAWBA
WISC III
Children with diurnal enuresis:
- 6.8% had cognitive delays - 2x more psychological disorders: Externalizing: ADHD (24.8%), ODD (10.9%), conduct disorder (11.8%) Internalizing (29.2%)
Wolfe-Christensen et al.25 USA Cross- sectional 600 children and adolescents referred to a urology clinic (375 males, 225 females) PSC
DVSS
- 19% had mental disorders: most common was ADHD
- Children at increased risk of having emotional disorders: males, with high body mass indices, and high DVSS scores
Üçer & Gümüş36 Turkey Cross- sectional 101 children with MNE (62 males, 39 females), 38 controls CDI, PedsQL, PSQI Case group:
- Poorer quality of life and quality of sleep
- Higher depression rates
- Poorer QOL when older
Von Gontard et al.17 Germany Cross- sectional 1001 children with LUTD (676 males, 325 females) CBCL - 70.1% had nocturnal enuresis
- 36.8% had diurnal enuresis
- 36.8% had fecal incontinence
- About 43% had emotional problems
Externalizing: (36%),
Internalizing: (33.3%) - Children with fecal incontinence → poorer emotional performance (58.8%)
- Children with incontinence had 3 to 6 times more behavioral comorbidities than controls
Zink et al.26 Germany Cross- sectional 166 children with LUTD (111 males, 55 females) CBCL - 40% had behavioral problems on CBCL
- 36% had psychiatric disorders
- Externalizing 2X > Internalizing
- Higher prevalence of psychiatric disorders in diurnal enuresis
- Children with nocturnal enuresis had higher rates of psychiatric comorbidities.
Baeyens et al.21 Bélgica Cross- sectional 81 children with MNE and 39 with NMNE CBCL
DBRS
- 15% had ADHD
- Poorer bladder control was not related to ADHD
Yang et al12 Taiwan Cross- sectional 130 children with LUTD symptoms (92 males, 38 females) SNAP IV - 55 children diagnosed with ADHD
- The ADHD group had high scores on the DVSS
Crimmins et al.34 USA Cross- sectional 192 children with ADHD and LUTD Clinical diagnosis - ADHD had negative effect on dysfunction resolution
- Children with ADHD: more trouble complying with treatment and poorer response to alarm intervention
Von Gontard et al.33 Germany Cross- sectional 1379 school-age children (734 males, 645 females) CBCL - Children with diurnal enuresis had 4.4-fold chance of having ADHD
Hooman et al.15 Irã Cross- sectional 135 children with LUTD and 75 controls CBCL Group with LUTD:
- Higher prevalence of behavioral disorders
Joinson et al.31 UK Longitudinal (ALSPAC) 10821 school-age children (4 to 9 years) DTTS
EDS
- Risk factors for voiding disorder:
- Developmental delays
- Difficult temperament
- Maternal anxiety and depression
Von Gontard & Hollmann32 Alemanha Cross- sectional 167 children with LUTD CBCL - 65% of the children with encopresis and enuresis had clinical-range scores in the CBCL
Kuhn et al.15 Germany Cross- sectional 49 children with LUTD (28 males, 21 females), 32 controls CBCL Ravens progressive matrices - Both groups had similar mean IQ Group with LUTD:
- Higher prevalence od behavioral disorders (41% vs. 9%):
- Internalizing (29% vs. 6%)
- Externalizing (35% vs. 0%)
- Children postponing voiding had worse CBCL scores than children with urinary incontinence (56% vs. 24%)
De Bruyne et al.16 Belgium Cross- sectional 78 children with LUTD (47 males, 31 females) and 110 controls CBCL
DBDRS PSI
Group with LUTD:
- Higher prevalence of depressive, aaggressive, and inattentive symptoms
- Parents: higher stress scores
- Higher prevalence of behavioral disorders in children associated with higher levels of parental stress
Von Gontard et al.29 UK Longitudinal (ALSPAC) > 8000 children in school age (7 to 9 years) SDQ - Higher prevalence of behavioral disorders in children with LUTD (41% vs. 9%):
- Children with high urinary frequency had higher rates of conduct, emotional, attention, and relationship disorders
- Children with urinary incontinence had more gastrointestinal, urinary, and psychological symptoms than their peers
Von Gontard et al.18 Germany Cross- sectional 718 school-age children CBCL - higher prevalence of ODD in children with incontinence than in continent children (19.5% vs. 5.2%)
- Frequency of enuresis was not related to prevalence of ODD symptoms
- No difference in the prevalence of ODD symptoms between types of LUTD
Niemczyk et al.19 Germany Cross- sectional 1676 preschoolers DISYPS-II Children with incontinence
- 16.4% t. externalizing
- 10.3% ADHD
- 10.3% ODD
Bael et al.37 Belgium Longitudinal
- prospective
111 children with LUTD CBCL - 19% had clinical-range scores in the CBCL: after treatment the prevalence dropped to 11%
- Only children with micturition disorders had significant decreases in the prevalence of externalizing problems and total problems in the CBCL
Joinson et al.27 UK Longitudinal (ALSPAC) 8769 school-age children TTS
EAS
RRPS
- Behavioral problems and difficult temperament in early childhood were identified as risk factor for nocturnal enuresis in school age

DAWBA: Development and Well- Being Assessment; WISC III: Wechsler Intelligence Scale for Children Third Edition; PSC: Pediatric Symptom Checklist; CDI: Children Depression Inventory; PedsQL: Pediatric Quality of Life Inventory; PSQI: The Pittsburgh Sleep Quality Index; DBRS: Disruptive Behavior Disorder Rating Scale; DTTS: Denver Toddler Temperament Scale; EDS: Edinburg Depression Scale; PSI:Parenting Stress Index; SDQ: Strenght and Difficulties Questionnaire; DISYPSI-II: Diagnositk- System für psychische Störungen nach ICD-10 und DSM-IV für Kinder und Jugendliche-II; TTS: Toddler Temperament Scale; EAS: Emotionally Activity Sociability Questionnaire; RRPS: Revised Rutter Parent Scale. CBLC: Child Behavior Check list; DVSS: Dysfunctional Voiding Symptom Score; IQ: intelligence quotient; QOL: quality of life; ADHD: attention deficit and hyperactivity disorder; ODD: oppositional defiant disorder.

Conclusion

Pediatric patients with LUTD often present with psychiatric disorders. This evident association reinforces the current idea that the central nervous system is involved in the etiology of most urinary tract disorders affecting children, contrary to the thought that the bladder was solely responsible for these disorders.7

Similarly to enuresis-free children, pediatric patients with MNE had lower emotional comorbidity rates. In the studies included in this review, the pediatric population with diurnal enuresis seems to have been more affected by psychological problems, whereas children with urinary urgency and incontinence showed internalizing symptoms; children postponing micturition - who often suffered from fecal retention, encopresis, and ODD - had higher rates of externalizing disorders.25 Children with diurnal enuresis and fecal incontinence are in greater need for mental health care. The impact of these dysfunctions also appears to spill over and affect parents and caregivers with significant levels of stress.21

It should be noted that most of the studies screened patients with LUTD for psychiatric symptoms, which in itself does not constitute diagnosis; only specialized health care professionals may diagnose the occurrence of psychiatric disorders based on the criteria dictated by the DSM or the ICD. Therefore, whenever symptoms of this nature are present, the patient must be referred to specialized care and treatment.4

Given the high rate of psychiatric comorbidities in children with LUTD, the search for related symptoms gains relevance and is recommended for every child with diurnal enuresis or other symptoms of LUTD or fecal incontinence. Emotional and behavioral disorders compromise compliance with treatment and lead to poorer prognosis.

Therefore, pediatricians and other health care workers recognizing psychiatric disorders in patients with LUTD should refer them to specialized care in order to mitigate their suffering and improve their prognostic chances. Likewise, mental health care workers must be aware of the possible associations between psychiatric disorders and LUTD.

Esse estudo contou com o financiamento da FAPEMIG (projeto número 21557). Também contou com o apoio da Pró- Reitoria de Pós-Graduação da UFMG através do Convênio CAPES/PRPQ/UFMG. Coautor MGFC foi contemplada com bolsa pelo CNPq.

Acknowledgements

The Office of the Dean of Graduate Education at UFMG and the CAPES/PRPQ/UFMG agreement supported this study. The authors would like to thank FAPEMIG for having funded project no. 21557. The authors would like to thank CNPQ for the aid provided to study participants. The authors would also like to thank the interdisciplinary team for their dedication while caring for the children enrolled with the Bladder Dysfunction Outpatient Clinic under the Pediatric Nephrology Unit at HC-UFMG.

References

1 Vasconcelos MMA, Lima EM, Vaz GB, Silva THS. Disfunção do trato urinário inferior - um diagnóstico comum na prática pediátrica. J Bras Nefrol 2013;35:57-64. DOI: http://dx.doi.org/10.5935/01012800.20130009Links ]

2 Mota DM, Victora CG, Hallal PC. Investigação de disfunção miccional em uma amostra populacional de crianças de 3 a 9 anos. J Pediatr (Rio J) 2005;81:225-32. [ Links ]

3 Nevéus T, von Gontard A, Hoebeke P, Hjälmås K, Bauer S, Bower W, et al. The standardization of terminology of lower urinary tract function in children and adolescents: report from the Standardisation Committee of the International Children's Continence Society. J Urol 2006;176:314-24. PMID: 16753432 DOI: http://dx.doi.org/10.1016/S0022-5347(06)00305-3Links ]

4 von Gontard A, Baeyens D, Van Hoecke E, Warzak WJ, Bachmann C. Psychological and psychiatric issues in urinary and fecal incontinence. J Urol 2011;185:1432-6. DOI: http://dx.doi.org/10.1016/j.juro.2010.11.051Links ]

5 Hooman N, Hallaji F, Mostafavi SH, Mohsenifar S, Otukesh H, Moradi-Lakeh M. Correlation between Lower Urinary Tract Scoring System, Behavior Check List, and Bladder Sonography in Children with Lower Urinary Tract Symptoms. Korean J Urol 2011;52:210-5. DOI:http://dx.doi.org/10.4111/kju.2011.52.3.210Links ]

6 American Psychiatric Association. DSM-V-TR: Manual diagnóstico e estatístico de transtornos mentais. 5a ed. Porto Alegre: Artmed; 2014. 948 p. [ Links ]

7 Franco I. Neuropsychiatric disorders and voiding problems in children. Curr Urol Rep 2011;12:158-65. DOI:http://dx.doi.org/10.1007/s11934-010-0168-7Links ]

8 von Gontard A, Equit M. Comorbidity of ADHD and incontinence in children. Eur Child Adolesc Psychiatry 2015;24:127-40. DOI:http://dx.doi.org/10.1007/s00787-014-0577-0Links ]

9 Griffiths D, Tadic SD. Bladder control, urgency, and urge incontinence: evidence from functional brain imaging. Neurourol Urodyn 2008;27:466-74. DOI: http://dx.doi.org/10.1002/nau.20549Links ]

10 Hyde TM, Deep-Soboslay A, Iglesias B, Callicott JH, Gold JM, Meyer-Lindenberg A, et al. Enuresis as a premorbid developmental marker of schizophrenia. Brain 2008;131:2489-98. PMID: 18669483 DOI: http://dx.doi.org/10.1093/brain/awn167Links ]

11 Griffiths D, Tadic SD, Schaefer W, Resnick NM. Cerebral control of the bladder in normal and urge-incontinent women. Neuroimage 2007;37:1-7. PMID: 17574871 DOI: http://dx.doi.org/10.1016/j.neuroimage.2007.04.061Links ]

12 Yang TK, Guo YJ, Chen SC, Chang HC, Yang HJ, Huang KH. Correlation between symptoms of voiding dysfunction and attention deficit disorder with hyperactivity in children with lower urinary tract symptoms. J Urol 2012;187:656-61. DOI:http://dx.doi.org/10.1016/j.juro.2011.10.016Links ]

13 Achenbach TM. Manual for the Child Behavior Checklist/6-18 and 2001 profile. Burlington: University of Vermont; 2001. [ Links ]

14 Bordin IA, Rocha MM, Paula CS, Teixeira MCT V, Achenbach TM, Rescorla LA, et al. Child Behavior Checklist (CBCL), Youth Self-Report (YSR) and Teacher's Report Form (TRF): an overview of the development of the original and Brazilian versions. Cad Saúde Pública 2013;29:13-28. [ Links ]

15 Kuhn S, Natale N, Siemer S, Stoeckle M, von Gontard A. Clinical differences in daytime wetting subtypes: urge incontinence and postponed voiding. J Urol 2009;182:1967-72. PMID: 19695641 DOI: http://dx.doi.org/10.1016/j.juro.2009.03.023Links ]

16 De Bruyne E, Van Hoecke E, Van Gompel K, Verbeken S, Baeyens D, Hoebeke P, et al. Problem behavior, parental stress and enuresis. J Urol 2009;182:2015-20. PMID: 19695644 DOI: http://dx.doi.org/10.1016/j.juro.2009.05.102Links ]

17 von Gontard A, Niemczyk J, Weber M, Equit M. Specific behavioral comorbidity in a large sample of children with functional incontinence: Report of 1,001 cases. Neurourol Urodyn 2015;34:763-8. DOI: http://dx.doi.org/10.1002/nau.22651Links ]

18 von Gontard A, Niemczyk J, Thomé-Granz S, Nowack J, Moritz AM, Equit M. Incontinence and parent-reported oppositional defiant disorder symptoms in young children-a population-based study. Pediatr Nephrol 2015;30:1147-55. DOI: http://dx.doi.org/10.1007/s00467-014-3040-zLinks ]

19 Niemczyk J, Equit M, Braun-Bither K, Klein AM, von Gontard A. Prevalence of incontinence, attention deficit/hyperactivity disorder and oppositional defiant disorder in preschool children. Eur Child Adolesc Psychiatry 2015;24:837-43. DOI: http://dx.doi.org/10.1007/s00787-014-0628-6Links ]

20 Herndon CD, Joseph DB. Urinary incontinence. Pediatr Clin North Am 2006;53:363-77. DOI: http://dx.doi.org/10.1016/j.pcl.2006.02.006Links ]

21 Baeyens D, Roeyers H, Hoebeke P, Verté S, Van Hoecke E, Walle JV. Attention deficit/hyperactivity disorder in children with nocturnal enuresis. J Urol 2004;171:2576-9. PMID: 15118422 DOI: http://dx.doi.org/10.1097/01.ju.0000108665.22072.b2Links ]

22 Shreeram S, He JP, Kalaydjian A, Brothers S, Merikangas KR. Prevalence of enuresis and its association with attention-deficit/hyperactivity disorder among U.S. children: results from a nationally representative study. J Am Acad Child Adolesc Psychiatry 2009;48:35-41. DOI: http://dx.doi.org/10.1097/CHI.0b013e318190045cLinks ]

23 Yang TK, Guo YJ, Chen SC, Chang HC, Yang HJ, Huang KH. Correlation between symptoms of voiding dysfunction and attention deficit disorder with hyperactivity in children with lower urinary tract symptoms. J Urol 2012;187:656-61. DOI:http://dx.doi.org/10.1016/j.juro.2011.10.016Links ]

24 Calado AA, Araujo EM, Barroso U Jr, Netto JM, Filho MZ, Macedo A Jr, et al. Cross-cultural adaptation of the dysfunctional voiding score symptom (DVSS) questionnaire for Brazilian children. Int Braz J Urol 2010;36:458-63. DOI: http://dx.doi.org/10.1590/S1677-55382010000400009Links ]

25 Wolfe-Christensen C, Veenstra AL, Kovacevic L, Elder JS, Lakshmanan Y. Psychosocial difficulties in children referred to pediatric urology: a closer look. Urology 2012;80:907-12. PMID: 23021666 DOI: http://dx.doi.org/10.1016/j.urology.2012.04.077Links ]

26 Zink S, Freitag CM, von Gontard A. Behavioral comorbidity differs in subtypes of enuresis and urinary incontinence. J Urol 2008;179:295-8. DOI: http://dx.doi.org/10.1016/j.juro.2007.09.007Links ]

27 Joinson C, Sullivan S, von Gontard A, Heron J. Early childhood psychological factors and risk for bedwetting at school age in a UK cohort. Eur Child Adolesc Psychiatry 2016;25:519-28. DOI: http://dx.doi.org/10.1007/s00787-015-0756-7Links ]

28 Joinson C, Heron J, von Gontard A. Psychological problems in children with daytime wetting. Pediatrics 2006;118:1985-93. PMID:17079570 DOI: http://dx.doi.org/10.1542/peds.2006-0894Links ]

29 von Gontard A, Heron J, Joinson C. Factors associated with low and high voiding frequency in children with diurnal urinary incontinence. BJU Int 2010;105:396-401. DOI: http://dx.doi.org/10.1111/j.1464-410X.2009.08780.xLinks ]

30 Deshpande AV, Craig JC, Smith GH, Caldwell PH. Factors influencing quality of life in children with urinary incontinence. J Urol 2011;186:1048-52. PMID: 21784481 DOI: http://dx.doi.org/10.1016/j.juro.2011.04.104Links ]

31 Joinson C, Heron J, von Gontard A, Butler U, Golding J, Emond A. Early childhood risk factors associated with daytime wetting and soiling in school-age children. J Pediatr Psychol 2008;33:739-50. DOI: http://dx.doi.org/10.1093/jpepsy/jsn008Links ]

32 von Gontard A, Hollmann E. Comorbidity of functional urinary incontinence and encopresis: somatic and behavioral associations. J Urol 2004;171:2644-7. PMID: 15118441 DOI: http://dx.doi.org/10.1097/01.ju.0000113228.80583.83Links ]

33 von Gontard A, Moritz AM, Thome-Granz S, Freitag C. Association of attention deficit and elimination disorders at school entry: a population based study. J Urol 2011;186:2027-32. PMID: 21944132 DOI: http://dx.doi.org/10.1016/j.juro.2011.07.030Links ]

34 Crimmins CR, Rathbun SR, Husmann DA. Management of urinary incontinence and nocturnal enuresis in attention-deficit hyperactivity disorder. J Urol 2003;170:1347-50. PMID: 14501767 DOI: http://dx.doi.org/10.1097/01.ju.0000084669.59166.16Links ]

35 Erdogan A, Akkurt H, Boettjer NK, Yurtseven E, Can G, Kiran S. Prevalence and behavioural correlates of enuresis in young children. J Paediatr Child Health 2008;44:297-301. PMID: 18036143 DOI: http://dx.doi.org/10.1111/j.1440-1754.2007.01255.xLinks ]

36 Üçer O, Gümüş B. Quantifying subjective assessment of sleep quality, quality of life and depressed mood in children with enuresis. World J Urol 2014;32:239-43. DOI: http://dx.doi.org/10.1007/s00345-013-1193-1Links ]

37 Bael A, Winkler P, Lax H, Hirche H, Gäbel E, Vijverberg M, et al. Behavior profiles in children with functional urinary incontinence before and after incontinence treatment. Pediatrics 2008;121:e1196-200. PMID: 18450862 DOI: http://dx.doi.org/10.1542/peds.2007-1652Links ]

38 Baeyens D, Roeyers H, Van Erdeghem S, Hoebeke P, Vande Walle J. The prevalence of attention deficit-hyperactivity disorder in children with nonmonosymptomatic nocturnal enuresis: a 4-year follow-up study. J Urol 2007;178:2616-20. PMID: 17945295 DOI:http://dx.doi.org/10.1016/j.juro.2007.07.059Links ]

39 Niemczyk J, Equit M, Hoffmann L, von Gontard A. Incontinence in children with treated attention-deficit/hyperactivity disorder. J Pediatr Urol 2015;11:141.e1-6. DOI: http://dx.doi.org/10.1016/j.jpurol.2015.02.009Links ]

40 Kaye JD, Palmer LS. Characterization and management of voiding dysfunction in children with attention deficit hyperactivity disorder. Urology 2010;76:220-4. DOI: http://dx.doi.org/10.1016/j.urology.2010.01.026Links ]

41 Butler R, Heron J. An exploration of children's views of bed-wetting at 9 years. Child Care Health Dev 2008;34:65-70. DOI:http://dx.doi.org/10.1111/j.1365-2214.2007.00781.xLinks ]

42 Naitoh Y, Kawauchi A, Soh J, Kamoi K, Miki T. Health related quality of life for monosymptomatic enuretic children and their mothers. J Urol 2012;188:1910-4. DOI: http://dx.doi.org/10.1016/j.juro.2012.07.012Links ]

Received: April 26, 2016; Accepted: May 13, 2016

Correspondence to: Eleonora Moreira Lima. Universidade federal de Minas Gerais - Faculdade de Ciências Médicas de Minas Gerais. Rua Piauí, nº 933, Apt 501, Belo Horizonte, MG, Brazil. CEP: 30150-320. E-mail: eleonoralima@uol.com.br

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