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Dive into the research topics where Justine Niemczyk is active.

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Featured researches published by Justine Niemczyk.


Neurourology and Urodynamics | 2015

Specific behavioral comorbidity in a large sample of children with functional incontinence: Report of 1,001 cases.

Alexander von Gontard; Justine Niemczyk; Michaela Weber; Monika Equit

Psychological comorbidity among children with functional incontinence is high: 20–30% of children with nocturnal enuresis (NE), 20–40% of those with daytime urinary incontinence (DUI) and 30–50% of those with fecal incontinence (FI) have clinically relevant comorbid disorders. The aim of this study was to analyze specific comorbid behavioral symptoms for different subtypes of incontinence in a large group of children.


Journal of Pediatric Urology | 2015

Incontinence in children with autism spectrum disorder

A. von Gontard; M. Pirrung; Justine Niemczyk; Monika Equit

INTRODUCTION Autism spectrum disorder (ASD) and incontinence (nocturnal enuresis (NE), daytime urinary incontinence (DUI), fecal incontinence (FI)) are relevant disorders in childhood. In general, children with special needs such as intellectual disability (ID) or ASD are more often affected by incontinence than typically developing children. OBJECTIVE In the few studies conducted on children with ASD, gastrointestinal (GI) symptoms have received more attention than NE, DUI and lower urinary tract symptoms (LUTS). The aim of the present study was to assess the prevalence of incontinence, LUTS and psychological symptoms/disorders in children with ASD compared to controls. STUDY DESIGN Forty children with ASD (12 children with infantile or childhood autism, 15 with atypical autism and 13 with Aspergers syndrome) (mean age 11.3 years) and 43 age-matched control children (mean age 10.7 years) were assessed. A questionnaire referring to incontinence and the International Consultation on Incontinence Questionnaire-Pediatric LUTS (ICIQ-CLUTS) were administered. Child psychopathology was assessed with the Child Behavior Checklist (CBCL/4-18). Child psychiatric ICD-10 diagnoses were based on a structured psychiatric interview (Kinder-DIPS). RESULTS Children with ASD showed increased rates of NE (30.0% vs 0%) and DUI (25.0% vs 4.7%) compared to controls. Among children with ASD, daytime bladder control (≥5 years of age: 20.5% vs 0%) and bowel control (≥4 years of age: 42.5% vs 7.5%) were delayed compared to controls. Children with ASD had a higher LUTS score. Additionally, children with ASD were more often affected by psychological symptoms and disorders. Rates of clinically relevant externalizing symptoms (32.5% vs 0%), internalizing symptoms (67.5% vs 9.3%) and total problem score (70.0% vs 2.1%) were higher in children with ASD than the controls (see table). Children with ASD had more ICD-10 diagnoses than the controls (47.5% vs 4.7%). DISCUSSION The present study showed that children with ASD are more at risk of DUI and NE than healthy controls. In addition, children with ASD had more LUTS, especially urgency and postponement, and they needed a longer time to become dry and continent. Additionally, according to the parental CBCL questionnaire, children with ASD showed higher rates of clinically relevant psychological symptoms (externalizing and internalizing symptoms), and according to the psychiatric interview, they had higher rates of comorbid psychological disorders. CONCLUSION Autism spectrum disorder is an incapacitating disorder with significant impairment in social functioning. In most cases, psychological symptoms and disorders co-occur. Additionally, children with ASD are at a greater risk of being affected by different forms of incontinence and LUTS. Therefore, screening for incontinence and, if indicated, treatment of these disorders is recommended.


Neurourology and Urodynamics | 2013

Elimination disorders in persons with Prader-Willi and Fragile-X syndromes.

Monika Equit; Aline Piro-Hussong; Justine Niemczyk; Leopold Curfs; Alexander von Gontard

Elimination disorders are common in typically developing children. Only few studies have addressed elimination disorders in persons with intellectual disability (ID)—and even fewer studies in those with specific syndromes. The aim of the study was to investigate the rates of elimination disorders and behavioral symptoms in persons with Prader–Willi (PWS) and Fragile‐X syndromes (FXS) in a large sample.


Journal of Pediatric Urology | 2015

Incontinence in children with treated attention-deficit/hyperactivity disorder.

Justine Niemczyk; Monika Equit; L. Hoffmann; A. von Gontard

INTRODUCTION Attention-deficit/hyperactivity disorder (ADHD) and incontinence (nocturnal enuresis, daytime urinary incontinence and fecal incontinence) are common disorders in childhood. Both disorders are strongly associated with each other. OBJECTIVE ADHD can affect compliance to incontinence therapy in a negative way; it can also affect outcome. The aim of the present study was to assess the prevalence of incontinence, age of bladder and bowel control, and psychological symptoms in children having treatment for ADHD compared to a control group. STUDY DESIGN Forty children having treatment for ADHD (75% boys, mean age 11.4 years) and 43 matched controls (60.5% boys, mean age 10.7 years) were assessed. Their parents filled out questionnaires to assess: child psychopathology (Child Behavior Checklist), incontinence (Parental Questionnaire: Enuresis/Urinary Incontinence; Encopresis Questionnaire - Screening Version) and symptoms of the lower urinary tract (International-Consultation-on-Incontinence-Questionnaire - Pediatric Lower Urinary Tract Symptoms). The ICD-10 diagnoses and childrens IQ were measured by standardized instruments (Kinder-DIPS, Coloured Progressive Matrices/Standard Progressive Matrices). RESULTS Rates of incontinence in the ADHD group (5% nocturnal enuresis, 5% daytime urinary incontinence, 2.5% fecal incontinence) did not differ significantly from incontinence rates in the control group (4.7% daytime urinary incontinence). More children in the ADHD group had Child Behavior Checklist scores in the clinical range. Further ICD-10 disorders were present in eight children with ADHD and in one control child. More children with ADHD had delayed daytime and nighttime bladder control, as well as delayed bowel control, than the controls. DISCUSSION The present study showed that if children are treated for their ADHD, according to standard practice guidelines, incontinence rates are similar to those without ADHD. More children with ADHD reached continence at a later age than the controls, which could be an indicator of maturational deficits in the central nervous system. Additionally, children with ADHD showed higher rates of clinically relevant psychological symptoms. CONCLUSION This study provides further information of the association between ADHD and incontinence. Treatment of ADHD may be associated with positive effects on incontinence outcomes. Therefore, children with ADHD should always be screened for incontinence problems and children with incontinence problems should also be screened for ADHD if symptoms of hyperactivity, inattention and/or impulsivity are also present.


European Child & Adolescent Psychiatry | 2016

Voiding postponement in children—a systematic review

Alexander von Gontard; Justine Niemczyk; Catharina Wagner; Monika Equit

Voiding postponement (VP) has been defined as a habitual postponement of micturition using holding maneuvers. VP can represent both a symptom, as well as a condition. As divergent definitions are used internationally, the aim was to review the current state of knowledge on VP and provide recommendations for assessment, diagnosis and treatment. A Scopus and a Pubmed search was conducted, entering the terms ‘voiding postponement’ without any restrictions or specifications. Other publications relevant to the topic were added. VP can represent a symptom in healthy children. As a condition, VP in combination with nocturnal enuresis (NE) is a subtype of non-monosymptomatic NE. Most studies have focused on daytime urinary incontinence (DUI) with VP, or more aptly termed voiding postponement incontinence (VPI). It is a behaviorally defined syndrome, i.e., by the habitual deferral of micturition and DUI. VPI is associated with a low micturition frequency, urgency and behavioral problems. The most common comorbid disorder is oppositional defiant disorder (ODD). VP as a symptom and VPI as a condition should be differentiated. VPI is a common disorder with many associated problems and disorders. Urotherapy and timed voiding are the main treatment approaches. Due to the high rate of comorbid ODD, other forms of treatment, especially cognitive behavioral therapy, are often needed.


Neurourology and Urodynamics | 2016

Incontinence in children, adolescents and adults with Williams syndrome.

Alexander von Gontard; Justine Niemczyk; Sorina Borggrefe-Moussavian; Catharina Wagner; Leopold Curfs; Monika Equit

Williams Syndrome (WS) is a microdeletion syndrome (chromosome 7q11.23) characterized by typical facial features, cardiovascular disease, behavioural symptoms, and mild intellectual disability (ID). The aim of this study was to assess the rates of incontinence and psychological problems in persons with WS.


Journal of Pediatric Gastroenterology and Nutrition | 2014

Toilet refusal syndrome in preschool children: do different subtypes exist?

Justine Niemczyk; Monika Equit; El Khatib D; von Gontard A

Objectives: Toilet refusal syndrome (TRS) is a common, benign disorder in toddlers defined by the use of diapers and refusal of toilet for defaecation, but has not been described systematically in preschool children yet. The aim of the study was to analyse and identify possible subgroups of TRS. Methods: Retrospective analysis of all of the consecutive children with TRS presented as outpatients in a clinic for elimination disorders. Patients had received a detailed paediatric and child psychiatric assessment, including the Child Behavior Checklist questionnaire. Three typical case vignettes are presented of TRS with constipation, oppositional defiant disorder, and sibling rivalry. Results: Twenty-five children (10 boys) with a mean age of 5.2 (3.4–7.3) years were included—representing 2.5% of all of the children (n = 1001) presented. They had high rates of constipation (60%) and elimination disorders (24%–44%). Child psychiatric International Classification of Diseases-10th Edition disorders were common (40%) and heterogeneous, with significantly more boys affected, but no differences between children with and without constipation. Conclusions: This study shows that TRS occurs also in older preschool (and even school) children. At this later age, it is associated with constipation and behavioural disorders. The case vignettes show differences in therapy and may represent different subgroups of TRS. TRS is associated with constipation, elimination disorders, and psychiatric disorders. Owing to this variety of comorbid disorders, different therapeutic approaches are needed. A general screening for behavioural symptoms is recommended.


Neurourology and Urodynamics | 2017

Incontinence in persons with Down Syndrome

Justine Niemczyk; Alexander von Gontard; Monika Equit; David Medoff; Catharina Wagner; Leopold Curfs

To assess the rates of incontinence and associated psychological problems in children, adolescents and adults with Down Syndrome, a genetic syndrome caused by partial or complete triplication (trisomy) of chromosome 21 and characterized by typical facial features, a physical growth delay and mild or moderate intellectual disability.


European Child & Adolescent Psychiatry | 2017

Incontinence in autism spectrum disorder: a systematic review

Justine Niemczyk; Catharina Wagner; A. von Gontard

Autism spectrum disorders (ASD) are defined by persistent deficits in reciprocal social interaction, communication, and language, as well as stereotyped and repetitive behavior. Functional incontinence, as well as ASD are common disorders in childhood. The aim of this systematic review was to give an overview of the co-occurrence of nocturnal enuresis (NE), daytime urinary incontinence (DUI), and fecal incontinence (FI) in ASD, and vice versa, of ASD in children with incontinence. A systematic literature search of the terms “incontinence”, “enuresis”, and “encopresis” in combination with “autism” or “Asperger” in four databases (Scopus, PubMed, PsycInfo and Web of science) was conducted. All studies that examined incontinence frequencies in samples with ASD, and studies that measured frequencies of ASD diagnoses or symptoms in samples with incontinence were included. Risk of bias and limitations of each study were described. After eligibility assessment, 33 publications were included in the review. The published literature implies a higher prevalence of incontinence in children with ASD compared to typically developing children. Limitations and biases as inappropriate diagnostic criteria for ASD and incontinence, selected samples, or lack of control groups are reported. Associations of incontinence in ASD with psychopathological symptoms were found. Vice versa, ASD symptoms are found in incontinent children, but no study included a non-ASD control sample. Incontinence symptoms are also reported as an adverse effect of medication in ASD. Due to methodological problems and definitional discrepancies in some publications, results have to be interpreted cautiously. Research in ASD and incontinence is scarce. More systematic research including state-of-the-art assessments is needed.


Neurourology and Urodynamics | 2018

Psychometric properties of the “parental questionnaire: Enuresis/urinary incontinence” (PQ-EnU)

Justine Niemczyk; Sarah K. Schäfer; Nicolas Becker; Monika Equit; Alexander von Gontard

The “Parental Questionnaire: Enuresis/Urinary Incontinence” (PQ‐EnU) is widely‐used in clinical assessment of nocturnal enuresis (NE) and daytime urinary incontinence (DUI). It includes 18 items regarding daytime (DW) and nighttime wetting (NW), 24 items concerning toilet habits (TH), and 14 items regarding behavioral problems (BP). The aim of the study was to evaluate reliability and validity of the PQ‐EnU.

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Leopold Curfs

Maastricht University Medical Centre

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