About the Rome IV Criteria for Nonretentive Faecal Incontinence
Four criteria over at least one month, in a child of developmental age older than four years. Defecation in places inappropriate to the sociocultural context. No evidence of faecal retention. And, after appropriate evaluation, incontinence not explained by another medical condition. The third criterion is the whole diagnosis: this is soiling without constipation, which is a different condition from the far commoner overflow incontinence of functional constipation and is treated in the opposite direction. Laxatives, which are the correct treatment for the retentive form, make this one worse.
Formula
Nonretentive faecal incontinence = ≥ 1 month history
AND developmental age > 4 years
AND defecation in places inappropriate to the sociocultural context
AND no evidence of faecal retention
AND another medical condition excluded after appropriate evaluation- No evidence of faecal retention
- Established by examination — abdominal palpation and, where appropriate, rectal examination or imaging. It cannot be concluded from the history alone, because families frequently do not know.
- Developmental age over 4 years
- Not chronological. In developmental delay, continence may never have been achieved, and describing that as incontinence misrepresents it.
- One month
- The shortest duration rule in the Rome IV child and adolescent chapter, alongside functional constipation.
- This is the counterpart of functional constipation with overflow, and the two are separated entirely by whether retention is present.
- The treatments diverge completely: laxatives for the retentive form, and behavioural management with laxatives avoided for this one.
- Emotional and behavioural difficulties are substantially more common in nonretentive incontinence than in the retentive form.
- Rome IV places it in the functional defecation disorders section of the child and adolescent chapter, alongside functional constipation.
Interpreting the result
The first and most important action is not to prescribe laxatives. This distinguishes management from the retentive form more sharply than anything else, and it is worth stating explicitly in the notes and to the family, because a child who moves between clinicians will otherwise be started on them again. Instead, use a structured toileting programme: regular sits after meals, adequate time, correct posture with the feet supported, and a diary that records sits and outcomes rather than only accidents. Involve the school, since access to an acceptable toilet during the day is often the practical obstacle and children will hold rather than use one they find unbearable. Assess the psychosocial context directly — emotional and behavioural difficulties are considerably more common in this group than in retentive incontinence, and treating the bowel without addressing them tends not to work. Avoid framing episodes as deliberate, in the consultation and in what you write: shame worsens outcomes, delays disclosure, and is frequently the reason a family presents late. Where criteria are not met, the failing criterion directs you: any evidence of retention means functional constipation with overflow, which needs disimpaction followed by prolonged maintenance. And onset after a period of established continence, or associated urinary symptoms or neurological signs, warrants a broader assessment including the spine.
| Score | Band | What it means | Action |
|---|---|---|---|
| Criteria met | Nonretentive faecal incontinence | Soiling for at least one month with no evidence of retention, developmental age over 4 years | Do not prescribe laxatives; structured toileting programme with a diary; involve the school; assess the psychosocial context |
| Criteria not met — evidence of retention | Functional constipation with overflow | Palpable mass, loaded rectum, retentive posturing or history of withholding | Disimpaction followed by prolonged maintenance laxatives — the opposite treatment |
| Criteria not met — developmental age 4 years or under | Outside the definition | Continence has not yet been developmentally achieved | Toilet training support rather than a diagnosis of incontinence |
| Red flags present | Outside the pathway | Neurological signs, spinal abnormality, urinary incontinence, or onset after established continence | Investigate — consider spinal imaging and a broader assessment |
What the Nonretentive Faecal Incontinence needs (4 inputs)
- At least a 1-month history in a child of developmental age older than 4 years
- Developmental rather than chronological age, as in the adult anorectal criteria — continence is a developmental milestone, and a child who has not reached it has not lost anything.
- Defecation in places inappropriate to the sociocultural context
- Rome IV words this culturally rather than absolutely, recognising that what counts as an appropriate place varies between settings.
- No evidence of faecal retention
- The defining criterion, and the one that must be demonstrated rather than assumed. A palpable abdominal mass, a loaded rectum, retentive posturing or a history of withholding all move the diagnosis to functional constipation with overflow.
- After appropriate evaluation, the faecal incontinence cannot be explained by another medical condition
- Spinal abnormalities, anorectal malformation and previous anorectal surgery all need consideration where the history or examination suggests them.
What it returns
- Criteria met or not met
- All four criteria are required.
- Which criterion is outstanding
- Reported when criteria are not met — most commonly evidence of retention, which redirects to functional constipation with overflow.
How it is calculated
In the retentive form of childhood soiling, the mechanism is mechanical and well understood: stool accumulates, the rectum distends and habituates, sensation is blunted, and liquid stool passes around the impacted mass. Nonretentive incontinence has none of that. The rectum empties normally, stool consistency is typically normal, and anorectal function on testing is largely unremarkable — which is precisely why laxatives cannot help and why increasing them worsens the soiling. What is actually going on is less settled, but the consistent findings are behavioural and psychosocial rather than physiological: the association with emotional and behavioural difficulties is strong, episodes frequently cluster around particular contexts such as school or specific times of day, and many children appear not to register the urge until after the event. That last observation matters clinically. It is the reason the condition is so often misread as deliberate, and the reason a structured toileting programme — which builds regular, prompted, unhurried opportunities rather than relying on the child noticing an urge — is the treatment that works.
Facts & figures
| Feature | Functional constipation with overflow | Nonretentive incontinence |
|---|---|---|
| Faecal retention | Present — palpable mass or loaded rectum | Absent, and must be demonstrated |
| Stool passed in the toilet | Infrequent, often large or hard | Usually normal in size and frequency |
| Withholding or retentive posturing | Common | Absent |
| Painful defecation history | Common | Not characteristic |
| Response to laxatives | Improves | Worsens |
| Emotional and behavioural difficulties | Present in some | Substantially more common |
| First-line treatment | Disimpaction then maintenance laxatives | Structured toileting programme, no laxatives |
The single examination finding — whether the rectum is loaded — determines which of two opposite treatments the child receives.
Evidence
Derivation — Rome Foundation, child/adolescent committee
2016Consensus criteria from the Rome IV committee on childhood functional gastrointestinal disorders in the child and adolescent age band, published in Gastroenterology in 2016.
Consensus-derived and built around a single discriminating criterion — the absence of faecal retention — because that is what separates two conditions with opposite treatments.
Guideline context — ESPGHAN/NASPGHAN 2014
2014Joint ESPGHAN and NASPGHAN evidence-based recommendations for the evaluation and treatment of functional constipation in infants and children.
Sets out the evaluation that establishes or excludes faecal retention, and the disimpaction-then-maintenance approach that applies to the retentive form — the treatment nonretentive incontinence must not receive.
How it compares
Nonretentive Faecal Incontinence vs Paediatric functional constipation
The condition this must be separated from, because the treatments are opposite — laxatives for one, no laxatives for the other.
Functional constipation with overflow is far commoner and produces soiling by a mechanical route: stool accumulates, the rectum habituates, and liquid stool passes around the impaction. It requires disimpaction followed by prolonged maintenance laxatives. Nonretentive incontinence has no retention, normal stool consistency and normal defecation into the toilet, and worsens on laxatives. The two are separated by a single examination finding, which is why Rome IV made the absence of retention a criterion rather than a supporting feature.
Nonretentive Faecal Incontinence vs Faecal incontinence in adults
Both use developmental rather than chronological age, and both are under-disclosed — but the adult criteria do not separate retentive from nonretentive.
The adult Rome IV criterion is a single sentence — recurrent uncontrolled passage of faecal material in someone of developmental age at least four years, over three months — and deliberately declines to subclassify by mechanism. The paediatric criteria do subclassify, because in children the retentive form dominates and the treatments diverge completely. Interestingly, the adult guidance arrives at the same practical point by a different route: excluding impaction with overflow is the first step in the adult assessment too, it is simply not written into the criteria.
Nonretentive Faecal Incontinence vs Functional defecation disorders
The adult evacuation disorders, which sit upstream of retentive rather than nonretentive incontinence.
Functional defecation disorders in adults involve impaired evacuation demonstrated on objective testing — inadequate propulsion or dyssynergic defecation — and lead to retention and, in some, overflow. Nonretentive incontinence is the opposite situation: evacuation is normal and there is nothing retained. The comparison is worth drawing because anorectal testing in a soiling child is sometimes proposed and rarely helps here; the diagnostic question is whether the rectum is loaded, which is answered by examination.
Pearls & pitfalls
- Do not prescribe laxatives. This is the single most important management difference, and it is the opposite of what the commoner condition needs.
- The absence of retention must be demonstrated by examination, not inferred from the history.
- Normal-sized stools passed in the toilet alongside daily soiling is the pattern that should raise this diagnosis.
- Failure to improve on laxatives is diagnostic information, not a reason to increase the dose.
- Avoid framing episodes as deliberate. This is the paediatric bowel condition most often misread as behavioural, and shame worsens outcomes.
- Emotional and behavioural difficulties are substantially more common here than in retentive incontinence — assess for them.
- Involve the school. Toilet access and acceptability during the day are frequently the practical obstacle.
- Developmental, not chronological, age over four years — the criterion is worded this way for a reason.
- A diary should record sits and outcomes, not only accidents, so the toileting programme can be adjusted.
- Onset after established continence, urinary symptoms or neurological signs warrant spinal imaging and a broader assessment.
Critical actions
- Examine the abdomen for a faecal mass, and perform or arrange rectal assessment where retention is in question.
- Take a full stool history — frequency, size, consistency, withholding behaviour and painful defecation.
- Establish whether laxatives have been tried and what happened.
- Assess developmental status and confirm that continence was previously achieved.
- Examine the back and lower limbs for signs of spinal abnormality, and ask about urinary incontinence.
- Assess the psychosocial context, including school, family and any emotional or behavioural difficulties.
- Start a structured toileting programme with regular post-meal sits, correct posture with foot support, and a diary.
- Liaise with the school about toilet access and about handling episodes without shaming the child.
- Arrange follow-up to review the diary and adjust the programme, rather than a single consultation.
Why this score exists
Defining a condition by the absence of a finding is unusual, and here it is the right call for a blunt reason: the two conditions being separated have opposite treatments. Most differential diagnoses are about precision — getting closer to the mechanism, refining the prognosis. This one is about avoiding active harm. A child with nonretentive incontinence given laxatives soils more, the family concludes that treatment has failed, and confidence in the next plan is spent before it starts. So Rome IV made the absence of retention a criterion rather than a supporting feature, which forces it to be established rather than assumed. The practical consequence is that this diagnosis cannot be made from a history: someone has to examine the abdomen, and often the rectum, and record what they found. That is a small demand, and it is the entire safeguard. Where it is skipped, the default assumption is constipation, because constipation is commoner — and the child who does not have it is the one who pays.
About the creator
First author, Rome IV child/adolescent functional gastrointestinal disorders committee
Chaired the committee that produced the child and adolescent criteria, including H3b.
Paediatric defecation disorders; co-author of the ESPGHAN/NASPGHAN constipation guideline
Produced much of the work distinguishing retentive from nonretentive childhood soiling.
Co-author; paediatric neurogastroenterology and motility
Co-authored both the Rome IV child and adolescent chapter and the ESPGHAN/NASPGHAN constipation guideline.
Limitations
- Defined by the absence of a finding, so the diagnosis is only as reliable as the examination that excluded retention.
- Consensus-derived with no validation cohort and no discrimination statistics.
- 'No evidence of faecal retention' is not operationalised — whether imaging is required, and which modality, is left open.
- Does not grade severity or frequency, though both determine the social impact.
- Says nothing about the psychosocial assessment, despite emotional and behavioural difficulties being substantially more common in this group.
- Offers no guidance on treatment, so the crucial point — that laxatives worsen it — has to come from elsewhere.
- Children can move between retentive and nonretentive patterns over time, which the criteria do not address.
- The one-month threshold is a convention rather than a measured boundary.
If you are the patient
This condition means a child soils their underwear regularly even though they are not constipated. That last part is the important bit, and it is what makes it different from the much commoner kind of soiling, where stool builds up inside and liquid leaks around it. Here there is no build-up: the bowel empties normally, stools are usually a normal size, and the child often opens their bowels perfectly well in the toilet as well as having accidents. Because of that, laxatives do not help — in fact they usually make it worse, which is why your doctor may stop them if they have already been started. It is worth saying clearly that this is not naughtiness, laziness or attention-seeking, and it is not something your child is choosing. This is the bowel condition most often mistaken for deliberate behaviour, precisely because there is no constipation to point to as an explanation. Many children genuinely do not notice the urge until after it has happened. Treating it as misbehaviour makes children hide the accidents, which delays help and makes everything harder. What works is a structured routine rather than a medicine: sitting on the toilet at regular times, especially after meals, with enough time and with feet supported on a step so the position is right, and keeping a simple diary of sits as well as accidents so the plan can be adjusted. Involving school matters too, since not being able to get to an acceptable toilet during the day is often part of the problem. It is also worth talking about how things are going more generally — worries, school and home life often play a part here, and addressing them helps the bowel as well.
Frequently asked questions
What are the Rome IV criteria for nonretentive faecal incontinence?#
At least a one-month history in a child of developmental age older than four years, comprising defecation in places inappropriate to the sociocultural context, no evidence of faecal retention, and incontinence not explained by another medical condition after appropriate evaluation.
How is this different from soiling caused by constipation?#
By whether stool is retained. In functional constipation with overflow, stool accumulates, the rectum habituates, and liquid stool passes around an impaction — that requires disimpaction and prolonged maintenance laxatives. In nonretentive incontinence there is no retention, stools are usually normal, and laxatives make the soiling worse. A single examination finding separates two opposite treatments.
Why should laxatives be avoided?#
Because there is nothing to clear. Adding laxatives increases stool volume and frequency without addressing the problem, so soiling worsens — and the family reasonably concludes that treatment has failed, which spends confidence needed for the plan that would have worked. If laxatives have already been started without benefit, that is diagnostic information rather than a reason to increase the dose.
How is the absence of retention established?#
By examination, not by history. Abdominal palpation for a faecal mass, and rectal assessment or imaging where there is doubt. Families frequently do not know whether their child is constipated, and the default assumption when nobody looks is constipation — because it is commoner. That assumption is exactly what the criterion exists to prevent.
Is the soiling deliberate?#
No. This is the paediatric bowel condition most often misread as behavioural, because there is no constipation to point to as an explanation. Many children do not register the urge until after the event. Treating episodes as deliberate leads children to hide them, delays presentation, and worsens outcomes — so the framing in the consultation and in the notes genuinely matters.
What treatment works?#
A structured toileting programme: regular sits after meals, adequate unhurried time, correct posture with the feet supported, and a diary recording sits and outcomes rather than only accidents. Involving the school is often decisive, since toilet access and acceptability during the day are frequently the practical obstacle. Addressing emotional and behavioural difficulties, which are more common in this group, is part of the treatment rather than an addition to it.
Why does Rome IV say developmental age rather than age?#
Because continence is a developmental milestone. A child who has not reached the stage at which continence is normally achieved has not lost control of something they acquired, and describing that as incontinence misrepresents it. The same wording is used in the adult anorectal criteria for the same reason.
What red flags warrant further investigation?#
Onset after a period of established continence, associated urinary incontinence, neurological signs in the lower limbs, or any spinal abnormality on examination such as a sacral dimple, tuft of hair or asymmetry. These warrant spinal imaging and a broader assessment rather than a functional label.