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Clinical Atlas Prestige · Evidence-first

Psych MEQs / SAQsChild and adolescent psychiatry — elimination disorders

Psych MEQs / SAQs · Child and adolescent psychiatry — elimination disorders

Elimination disorders — enuresis and encopresis stepped care (MEQ)

FRANZCP-style MEQ on enuresis and retentive encopresis: classification, assessment, alarm vs desmopressin, disimpaction/PEG, non-punitive care.

20 marks20 min
On this page & tools

Target exams

FRANZCPMRCPsychABPNMD-DNB

Target exams

FRANZCPMRCPsychABPNMD-DNB
Prompt
A 7-year-old boy is referred to CAMHS after school exclusion from a camp because of bedwetting and because classmates tease him about 'smelly pants.' He has never been dry at night. He voids normally by day without urgency. Parents describe large infrequent stools, toilet withholding, and liquid staining of underwear that they treated as diarrhoea. Father has begun making him wash sheets as punishment. Teachers report inattention and fidgeting. Parents ask for 'the tablet that fixes bedwetting' before next term's camp and whether he is being deliberately dirty. (i) State DSM age thresholds and classify the likely elimination diagnoses using DSM and ICCS language. (ii) Outline assessment including red flags and investigations. (iii) Give a management plan for enuresis and encopresis with named first-line strategies and medication safety points. (iv) Address punishment and school stigma. (v) Counsel prognosis and disposition. (20 marks)

Model answer

Reveal model answer

(i) Classification. Age thresholds: enuresis ≥5 years; encopresis ≥4 years (or equivalent developmental level). Night wetting never dry = primary nocturnal enuresis; no daytime LUTS suggests monosymptomatic nocturnal enuresis (MNE) in ICCS terms. Underwear staining with large hard stools and withholding = encopresis with constipation and overflow incontinence (retentive), not wilful dirtiness.[1][2][7]

(ii) Assessment. Bladder–bowel diary; constipation screen; growth, abdominal faecal mass, spine/neurology; ADHD screen given inattention/fidgeting; bullying/shame; parental punishment practices; urinalysis if indicated; escalate investigations for red flags (polyuria/polydipsia, continuous wetting, neuro signs, secondary onset with medical features).[1][2][3]

(iii) Management. Stop punishment. Bowel first: education, disimpaction, PEG maintenance to soft daily stools, scheduled toileting after meals, reward sitting/success — ESPGHAN/NASPGHAN-aligned.[6][7] Enuresis: alarm for durable cure if family ready; desmopressin for camp dryness with strict evening fluid restriction and hyponatraemia counselling; imipramine last-line only (cardiotoxicity/overdose).[3][4][5][8] Treat ADHD if confirmed.

(iv) Stigma. Name overflow mechanism to parents/school; no sheet-washing punishments; anti-bullying plan; discrete camp arrangements.[1][3]

(v) Prognosis/disposition. Spontaneous improvement common with age but impairment warrants active care; alarm more durable than desmopressin after stopping; bowel maintenance for months to prevent relapse. Paediatric/continence pathway for medical care; CAMHS for ADHD, family conflict, psychological sequelae.[3][4][5][6]

Common errors

  • Treating only night wetting while missing retentive encopresis.[6][7]
  • Prescribing desmopressin without fluid-restriction teaching.[5]
  • Endorsing punishment as "motivation."[1]
  • Using imipramine first-line.[8]
  • Calling overflow soiling deliberate diarrhoea.[6][7]

References

  1. [1]Fritz G, Rockney R, et al. Practice parameter for the assessment and treatment of children and adolescents with enuresis J Am Acad Child Adolesc Psychiatry, 2004.PMID 15564822
  2. [2]Neveus T, Eggert P, Evans J, et al. Evaluation of and treatment for monosymptomatic enuresis: a standardization document from the International Children's Continence Society J Urol, 2010.PMID 20006865
  3. [3]Nunes VD, O'Flynn N, Evans J, Sawyer L Management of bedwetting in children and young people: summary of NICE guidance BMJ, 2010.PMID 20980375
  4. [4]Caldwell PH, Codarini M, Stewart F, Hahn D, Sureshkumar P Alarm interventions for nocturnal enuresis in children Cochrane Database Syst Rev, 2020.PMID 32364251
  5. [5]Hahn D, et al. Desmopressin for nocturnal enuresis in children Cochrane Database Syst Rev, 2025.PMID 40728007
  6. [6]Tabbers MM, DiLorenzo C, Berger MY, et al. Evaluation and treatment of functional constipation in infants and children: evidence-based recommendations from ESPGHAN and NASPGHAN J Pediatr Gastroenterol Nutr, 2014.PMID 24345831
  7. [7]Loening-Baucke V Functional fecal retention with encopresis in childhood J Pediatr Gastroenterol Nutr, 2004.PMID 14676600
  8. [8]Caldwell PH, Sureshkumar P, Wong WC Tricyclic and related drugs for nocturnal enuresis in children Cochrane Database Syst Rev, 2016.PMID 26789925