Abstract
Fragile-X-syndrome (FXS) is caused by a mutation on the X chromosome (Xq27.3). Males with a full mutation have typical dysmorphic signs, moderate intellectual disability and psychological disorders. Twenty-five to fifty percent are affected by incontinence. The aim of the study was to assess subtypes of incontinence and psychological problems in children with FXS in their home environments. Twenty-two boys with FXS (mean age 11.0 years) and 22 healthy controls (mean age 11.1 years) were examined with sonography, uroflowmetry, 48-h bladder diary, physical examination, IQ test, parental psychiatric interview and questionnaires regarding incontinence and psychological symptoms in a home setting. Boys with FXS had higher rates of incontinence than controls (59.1 vs. 4.8 %). The most common subtypes in FXS boys were primary non-monosymptomatic nocturnal enuresis, urge incontinence and nonretentive faecal incontinence. 90.9 % boys with FXS had a psychological comorbidity. Incontinence and behavioural symptoms were not associated.
Conclusion: Boys with FXS have a higher risk for physical disabilities, psychological disorders and incontinence than healthy boys. Constipation is not a major problem in FXS. As effective treatment is available for children with ID, we recommend offering assessment and therapy to all children with FXS and incontinence.
What is Known: |
• Boys with fragile-X-syndrome (FXS) have higher rates of incontinence, psychological disorders and somatic conditions than typically developing boys. |
What is New: |
• Constipation is a rare condition in FXS in contrast to other genetic syndromes. |
• Although incontinence rates are higher, urological findings (uroflowmetry, sonography) are not more pathological per se in FXS. |
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Abbreviations
- DSM-5:
-
Fifth edition of the Diagnostic and Statistical Manual of Mental Disorders
- DUI:
-
Daytime urinary incontinence
- DV:
-
Dysfunctional voiding
- FI:
-
Faecal incontinence
- FI-C:
-
Faecal incontinence and constipation
- FI-NR:
-
Nonretentive faecal incontinence
- FXS:
-
Fragile-X-syndrome
- ICCS:
-
International Children’s Continence Society
- ID:
-
Intellectual disability
- LUTS:
-
Lower urinary tract symptoms
- NE:
-
Nocturnal enuresis
- OAB:
-
Overactive bladder
- UI:
-
Urge incontinence
- VP:
-
Voiding postponement
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Acknowledgments
We would like to thank the German support group ‘Interessengemeinschaft Fragiles-X e. V.’ and their chairman Dr. Jörg Richstein for giving us the opportunity to cooperate and conduct this study with the help of the members of the support group.
Authors’ individual contribution to the paper
Niemczyk, Justine: Protocol and project development, data management and data analysis, manuscript writing and editing
von Gontard, Alexander: Protocol and project development, data management, manuscript writing and editing
Equit, Monika: Protocol and project development, data analysis, manuscript editing
Bauer, Katharina: Data collection and management
Naumann, Teresa: Data collection and management
Wagner, Catharina: Protocol and project development, data management
Curfs, Leopold: Protocol and project development, manuscript editing
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The Department of Child and Adolescent Psychiatry, Saarland University Hospital, received financial support from Novartis AG to conduct this study.
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The authors declare that they have no conflict of interest.
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All procedures performed in the present study have been approved by the local ethics committee and were in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
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Communicated by Jaan Toelen
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Niemczyk, J., von Gontard, A., Equit, M. et al. Detailed assessment of incontinence in boys with fragile-X-syndrome in a home setting. Eur J Pediatr 175, 1325–1334 (2016). https://doi.org/10.1007/s00431-016-2767-x
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DOI: https://doi.org/10.1007/s00431-016-2767-x