Mother of A 2-year-old with Runny Stools After Stopping Laxatives — Free SCA Practice Case
Mother of a 2-year-old with runny stools after stopping laxatives
Station Timer
Golden Minute
Initial Introduction
•Introduce yourself
•Ask an open question — "How can I help you today?"
•Listen — don't interrupt
•Catch early cues
Data Gathering
History, ICE & Diagnosis
Clinical Management
Diagnosis, Plan & Decisions
Safety Net
Follow-up & Close
Materials for Candidate
Please review before starting the consultation
Full Name
Leo Bennett
Age
2 years
Consultation Type
TelephoneAge
2
Situation
Telephone Consultation. The child's mother is calling.
Reason for Encounter
"My little boy keeps having runny, leaky poos in his pants. He was on a laxative but I stopped it because of the runny stools — surely a laxative makes that worse?"
Medical Records (Leo Bennett)
- ●PMH: Constipation (previously prescribed a macrogol laxative).
- ●Medications: Macrogol (paediatric) — stopped by mother.
- ●Allergies: NKDA.
- ●Growth: Tracking along centiles; thriving.
Patient Script
For the friend playing the patient role
Character Overview: You are Hayley, mother of Leo, who is 2. Leo was constipated and was prescribed a laxative (a sachet powder), but you stopped it a couple of weeks ago because he started having runny, leaky poos in his pants and you assumed the laxative was causing diarrhoea. In fact he still strains and seems to hold on, and only passes hard poos occasionally, with the leaking in between. You are in the middle of potty training and it is not going well. Leo is otherwise well, eating, drinking, growing, and happy. You are a caring, slightly frazzled first-time mum who wants to do the right thing and is puzzled about the laxative.
Opening Sentence: "Hi Doctor. My little boy Leo, he's two — he keeps having these runny, leaky poos in his pants, several times a day. He was on a laxative but I stopped it because I thought the laxative was giving him diarrhoea. That makes sense, doesn't it? But it hasn't got better."
History if Asked (Data Gathering Phase)
- ●The stools: "Runny, smeary, leaky poos in his pants during the day — not proper big soft poos. In between, when he does 'go', it's hard and he strains and cries."
- ●The laxative: "He was on a sachet powder for constipation. I stopped it about two weeks ago because of the runny stuff — I thought it was causing diarrhoea."
- ●Straining/holding: "He strains, goes red, sometimes seems to hold it in — clenches and hides. When it comes it's hard."
- ●Potty training: "We're trying to potty train and it's a nightmare. He gets upset about the toilet."
- ●General health: "He's well otherwise — eating, drinking, playing, growing fine. No tummy swelling or vomiting."
ICE — Ideas, Concerns, Expectations
The mother does not volunteer this information unprompted. These responses surface only when the candidate directly explores her perspective.
- ●Ideas: Hayley believes the laxative caused diarrhoea, so stopping it was sensible — she does not realise the leaking is overflow from constipation. "In my head the laxative gave him the runs, so stopping it made sense."
- ●Concerns: She is worried something is wrong with his tummy/bowels, and stressed that potty training is failing. "I'm worried there's something wrong with his tummy, and the potty training is doing my head in."
- ●Expectations: She wants the leaking sorted and advice on potty training. "I want the leaking to stop and some help with the potty training."
If Asked — Constipation and Red-Flag Screen
The mother answers these only when directly asked.
- ●If asked about hard, infrequent, painful stools / straining: "Yes — when he goes it's hard and painful, and he strains. He doesn't go often."
- ●If asked about withholding behaviour (clenching, hiding, refusing the toilet): "He does clench and hide, and he's scared of the toilet."
- ●If asked about the leaking pattern (smearing between hard stools): "It's smeary leaking in between the hard ones — not proper diarrhoea."
- ●If asked about diet and fluids: "He's a fussy eater, not much fruit or veg, and I don't think he drinks a lot of water."
- ●If asked about blood, tummy pain, vomiting, or a swollen tummy: "A little blood streak on a hard poo once, no vomiting, tummy's not swollen."
- ●If asked about growth/weight and general wellbeing: "He's growing well and is happy and active."
- ●If asked about red flags (from birth, delayed meconium, weight loss, developmental concerns): "He passed meconium normally as a newborn, he's developing normally, no weight loss." (Reassuring against organic causes.)
Responses to Management (The Negotiation Phase)
- ●If the Doctor explains this is overflow from constipation, not diarrhoea: "So the leaking is actually overflow because he's constipated — not diarrhoea? That's the opposite of what I thought." (The tested point is explaining overflow soiling and correcting her understanding.)
- ●If the Doctor advises restarting/optimising the laxative: "So I should put him back on the laxative — even though he's leaking? That feels wrong." (The tested point is explaining why laxatives are needed [disimpaction then maintenance], addressing her understandable concern.)
- ●If the Doctor advises on toilet training and behaviour: "How do I handle the potty training when he's so scared of the toilet?" (The tested point is positive, non-punitive toilet-training support.)
- ●If the Doctor advises on diet/fluids: "Would changing his diet help?"
- ●If the Doctor safety-nets: "What would mean I need to get him seen?"
Mark Scheme
Domain 1: Data Gathering and Diagnosis
Domain 2: Clinical Management and Medical Complexity
Domain 3: Relating to Others
Clinical Learning Points
Overflow Soiling Is Not Diarrhoea
- ●In a constipated child, liquid stool leaking around impacted faeces causes overflow soiling, which is frequently mistaken for diarrhoea. Recognising this is the key step — and it explains why laxatives are needed, not stopped.
Recognising Childhood Constipation
- ●Features include infrequent, hard, painful stools; straining; withholding behaviour (clenching, hiding, toilet fear); and overflow soiling. It is a clinical diagnosis — no investigation is needed in the typical case.
Red Flags to Exclude
- ●Screen for delayed passage of meconium at birth, growth faltering/weight loss, abdominal distension, vomiting, developmental concerns, and significant rectal bleeding — which would prompt consideration of organic causes (e.g. Hirschsprung's disease) and referral.
Management (NICE NG99)
- ●Treat with a macrogol laxative: disimpaction first (if impacted), then a maintenance dose. Warn that disimpaction can transiently increase soiling/loose stool before improvement. Treatment is often needed for months and weaned gradually — do not stop too soon.
Behavioural and Toilet-Training Support
- ●Advise positive, non-punitive toilet training — regular unhurried toilet sits (e.g. after meals), rewards/encouragement, and a relaxed approach to toilet fear — alongside increased fibre and fluids.
Reassurance and Follow-Up
- ●Reassure that constipation with overflow is common and treatable in a thriving child, avoid over-investigation, safety-net for red flags, and arrange follow-up to titrate treatment.
Communicating a Counter-Intuitive Plan
- ●The core communication task is explaining why the child needs more laxative when the parent has stopped it for "diarrhoea" — clearly and persuasively enough to secure adherence.
Common Candidate Mistakes in This Case
- ●Accepting "diarrhoea": missing overflow soiling and advising against laxatives.
- ●Not restarting/optimising the laxative: perpetuating the constipation cycle.
- ●Not warning about transient worsening: leading the parent to stop treatment again.
- ●Omitting behavioural/diet advice: neglecting toilet training and lifestyle.
- ●Over-investigating or under-safety-netting: testing a straightforward case, or failing to give red-flag advice.