History Taking · Intermediate · Paediatrics

Bedwetting at Age 7

Practise this PLAB 2 history taking station on Nocturnal Enuresis. 8-minute voice AI simulation with feedback on all 3 marking domains.

Clinical scenario

You are an FY2 doctor in primary care. Mrs Dorothy Haigh has brought her seven-year-old son Reginald to the surgery with concerns about persistent bedwetting. He has been dry during the day for two years but continues to wet the bed at night. Please take a focused history and discuss initial management options with the parent.

Background notes: PMH: Primary nocturnal enuresis since infancy, otherwise healthy

What this station tests

  • Confirming primary monosymptomatic nocturnal enuresis: lifelong, no dry period >6 months, dry during day, no daytime symptoms
  • Excluding secondary causes: constipation, diabetes, UTI, emotional distress, recent onset suggesting acquired cause
  • Enuresis alarm as the most effective long-term treatment: better than desmopressin for sustained cure
  • Desmopressin for rapid short-term effect: useful for sleepovers and school trips
  • Never punishing for wet nights: positive reinforcement only

How to use your 8 minutes

  • 0-1 min — Introduction: Introduce yourself, confirm identity, open question. 'What's brought you in today?'
  • 1-4 min — Systematic History: Presenting complaint detail (SOCRATES for pain, timeline, severity). Systems review. PMH, medications, allergies.
  • 4-6 min — Context and ICE: Social history (smoking, alcohol, occupation, living situation). Family history. Ideas, Concerns, Expectations.
  • 6-7 min — Summary and Plan: Summarise findings back to patient. Share differential/working diagnosis. Outline investigation and management plan.
  • 7-8 min — Closing: Safety netting with specific red flags. Arrange follow-up. Check for questions.

Consultation approach

The opening

Nocturnal enuresis at age 7 is beyond the normal developmental window and warrants assessment and management. The candidate must exclude secondary causes, assess impact, and provide a stepped management plan. Reginald is 7, wetting the bed almost every night, dry during the day since age 5. Open with: 'Reginald, your mum tells me you sometimes have wet nights. Can you tell me about it?' Address the child first.

Core approach

Confirm primary nocturnal enuresis. He has never had a sustained dry period of more than 6 months (primary). He is dry during the day (monosymptomatic). No daytime wetting, no urgency, no frequency, no pain on urination. This excludes daytime bladder dysfunction and UTI. Onset: lifelong. Frequency: almost every night.

Exclude secondary causes. No recent onset (secondary enuresis after a dry period would suggest emotional distress, UTI, diabetes, or constipation). No polyuria or polydipsia (excludes diabetes mellitus or insipidus). No dysuria (excludes UTI). Constipation: ask (full rectum pressing on bladder is a common overlooked cause). Any emotional stressors? (School, bullying, family changes.) Family history: late bedwetting often runs in families.

Assess the impact. He is embarrassed. He avoids sleepovers. He worries about school trips. His self-esteem is affected. His mother is managing with protective sheets but is tired of the nightly laundry.

Closing and safety netting

First-line: general measures. Adequate fluid intake during the day (not restricting fluids, which is counterproductive). Reduce caffeinated drinks. Toilet before bed. Reward system (praise and stickers for dry nights, never punishment for wet ones). Consider an enuresis alarm (most effective long-term treatment, wakes the child when moisture is detected, takes 4 to 6 weeks to work, requires motivated family).

Second-line: desmopressin (synthetic ADH) for rapid short-term effect (useful for sleepovers and school trips while alarm training is ongoing). Explain: 'It reduces urine production overnight. It works quickly but the bedwetting may return when it is stopped, which is why the alarm is better for long-term cure.'

Address his self-esteem. 'Reginald, this is not your fault. Lots of children your age have the same problem and it does get better.' Refer to the enuresis clinic if available. Safety net: 'If he starts wetting during the day, develops pain on urination, or starts drinking a lot more than usual, come back.' Follow-up in 4 weeks.

How examiners mark this station

Examiners will focus on the thoroughness and structure of your history taking for nocturnal enuresis. Domain 1 (Data Gathering) carries the most weight: expect marks for systematic coverage of presenting complaint, red flags, PMH, medications, social and family history. Domain 2 (Clinical Management) requires a clear differential, appropriate investigations, and a safe management plan with safety netting. Domain 3 (Interpersonal Skills) is assessed throughout: genuine exploration of ICE, active listening, empathic responses, and clear communication without jargon.

Domain 1: Data Gathering, Technical and Assessment Skills (Primary focus)

Scores well: Primary enuresis confirmed. Daytime continence established. Secondary causes excluded (constipation, diabetes, UTI, stress). Impact assessed. Family history checked.

Costs marks: Not excluding secondary causes. Not checking constipation. Not assessing impact.

Domain 2: Clinical Management Skills (Primary focus)

Scores well: Enuresis alarm recommended. Desmopressin for short-term/events. General measures (fluids, toilet before bed, reward system). Enuresis clinic referral. No punishment. Follow-up at 4 weeks.

Costs marks: Fluid restriction. No alarm. Punishment for wet nights. No follow-up.

Domain 3: Interpersonal Skills (Primary focus)

Scores well: Addressing the child directly and reassuring. Normalising the condition ('lots of children your age'). Addressing self-esteem. Supporting the mother's frustration. Positive framing.

Costs marks: Making the child feel ashamed. Not addressing the child directly. Being dismissive.

Common examiner feedback (and how to fix it)

Did not gather sufficient information to make an adequate assessment of the patient's condition

Fix: Use a consistent framework for every history. After covering the presenting complaint, systematically move through PMH, drug history, social history, family history, and ICE. Keep a mental checklist.

Did not identify the patient's problems and/or did not develop a management plan adequately

Fix: Reserve the final 2 minutes to summarise your findings, share your working diagnosis with the patient, and outline your investigation and management plan including safety netting.

Common mistakes in this station

  1. Restricting fluids. Fluid restriction is counterproductive as it reduces functional bladder capacity. Candidates who advise 'stop drinking after 6pm' demonstrate incorrect management.
  2. Prescribing desmopressin without mentioning the enuresis alarm. Desmopressin provides rapid but temporary effect. The alarm provides sustained cure. Candidates who rely on desmopressin alone miss the most effective treatment.
  3. Not excluding constipation. A full rectum pressing on the bladder is a common and overlooked cause of enuresis. Candidates who do not ask about bowel habit miss a treatable contributing factor.

Resitting PLAB 2?

If you have previously struggled with history taking stations, focus on building a consistent systematic framework that you apply to every case. Practise structuring your history into clear phases (presenting complaint, systems review, PMH, social, ICE) so that even under pressure, you cover all domains. Many resitters lose marks not on knowledge but on organisation and time management.

Example opening

Good morning/afternoon, my name is Dr [Name], I'm one of the doctors here today. Could I confirm your name and date of birth please? Thank you. So, what's brought you in to see me today?

Frequently asked questions

What is the best way to take a nocturnal enuresis history in PLAB 2?

Nocturnal enuresis at age 7 is beyond the normal developmental window and warrants assessment and management. The candidate must exclude secondary causes, assess impact, and provide a stepped management plan. Reginald is 7, wetting the bed almost every night, dry during the day since age 5.

Where are marks won and lost in this nocturnal enuresis station?

Examiners reward: Primary enuresis confirmed. Daytime continence established. Secondary causes excluded (constipation, diabetes, UTI, stress). Impact assessed. Family history checked. Candidates are penalised for: Not excluding secondary causes. Not checking constipation. Not assessing impact.

Where do candidates most often go wrong in this station?

Restricting fluids. Fluid restriction is counterproductive as it reduces functional bladder capacity. Candidates who advise 'stop drinking after 6pm' demonstrate incorrect management.

Can I do well in this station without real-world experience of nocturnal enuresis?

This station rewards process over personal experience. The skill being assessed: Excluding secondary causes: constipation, diabetes, UTI, emotional distress, recent onset suggesting acquired cause. Work through the consultation approach above, then rehearse it aloud under the 8-minute time pressure so the structure holds up in the exam.

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