Encopresis is one of the loneliest issues in autism parenting. Families rarely talk about it, even with close friends. Children who are affected often feel ashamed. Parents often feel confused, and sometimes exhausted, and sometimes angry. Many have been told, directly or indirectly, that their child is "doing this on purpose," "regressing," or "not trying." Many have tried consequences, reward charts, and stern conversations, and watched the problem continue or get worse.
There is a specific reason those approaches usually fail. Encopresis, in the overwhelming majority of cases, is not a behavior problem. It is a medical condition, and treating it as a discipline issue makes it worse, sometimes significantly worse. Understanding what is actually happening in the body is the first step toward treating it in a way that works.
This article covers what encopresis actually is, why it is more common in autistic children, the specific cycle that causes it, why it is so often misread, when to see a doctor, what medical treatment looks like, and how ABA-informed strategies fit into the picture after the medical work is done. Written with the understanding that many parents reading this have been carrying the weight of this issue alone for a long time.
What Encopresis Actually Is
Encopresis is defined in medical literature as the repeated passage of stool in inappropriate places (usually into clothing) in a child aged 4 or older who has already achieved bowel control. It is not the same as a young child still learning to use the toilet. It is a specific condition that affects children who have been continent and then lose that control.
There are two categories:
Retentive encopresis accounts for approximately 85 to 95% of cases. It is caused by chronic constipation. Over time, the child's rectum becomes distended by retained stool, sensation is reduced, and softer stool leaks out around the hard fecal mass. The child often does not feel it happening. To parents, it can look like diarrhea, deliberate soiling, or a return to toddler-stage behavior. It is none of those things.
Non-retentive encopresis accounts for the remaining 5 to 15% of cases. It involves fecal incontinence without impaction and is significantly less common. It is not covered in depth here because it requires a different clinical approach.
In autism-specific research, one review found a median prevalence of encopresis of about 12% in autistic children. Another study cited that children with autism are 3.8 times more likely to have chronic constipation than typically developing children, which drives most encopresis cases. Delays in care are common. One published case series found the average time between symptom onset and the start of treatment was 12 months. That delay usually means the underlying constipation gets significantly worse before it gets better.
The Withholding-Impaction-Overflow Cycle
Understanding the physical mechanism is essential, because it explains why punishment or reward-only approaches fail, and why the problem is not what it looks like.
The cycle usually begins with a single painful bowel movement, often years before the encopresis becomes obvious. Research indicates 63% of children with encopresis have a history of painful defecation beginning before age three.
Once a child associates bowel movements with pain, they may begin to withhold. Withholding is the voluntary contraction of the external sphincter to avoid having a bowel movement. It is not defiance. It is a natural nervous-system response to protect against expected pain.
Here is what happens next, physiologically:
The child withholds, delaying the bowel movement
The colon absorbs more water from the retained stool, making it harder
When the child eventually does pass a bowel movement, it hurts more (because the stool is harder)
The next bowel movement is even more feared
Withholding increases
The rectum begins to accommodate the growing fecal mass by stretching
Over time, the rectum becomes chronically distended
Nerve sensation in the stretched rectum diminishes
The child stops feeling the urge to have a bowel movement
Soft, liquid stool from higher in the colon begins to leak around the impacted mass
The child does not feel the leaking happen
At this point, the child cannot control the soiling because they cannot feel it coming. This is not a choice. It is a physical consequence of the withholding-impaction cycle. And the more the parent responds with consequences or rewards, the more the child's anxiety around toileting increases, which usually worsens the withholding.
Breaking this cycle requires medical intervention first. Behavioral strategies alone cannot fix a physically distended rectum with reduced sensation.
Why Encopresis Is More Common in Autistic Children
The elevated rate is not a coincidence. Several autism-specific factors contribute.
Chronic constipation is more common in autism
Autistic children have GI motility differences, food selectivity, altered interoception, and higher rates of anxiety, all of which contribute to constipation. Blossom's article on gastrointestinal issues in autistic children covers the broader research on this in depth. Constipation is the direct driver of retentive encopresis.
Sensory sensitivities around toileting
Many autistic children experience the bathroom as sensorily overwhelming. Cold toilet seats, the sound of flushing, splashing water, the position of the feet not touching the floor, the sensation of the seat opening being too wide, the specific texture of toilet paper, the smell of the room, unfamiliar bathrooms at school or in public: any of these can create discomfort or aversion strong enough to trigger withholding.
Interoceptive differences
Interoception is the ability to sense internal body states, including the urge to have a bowel movement. Research consistently documents that autistic children often have altered interoception. A child who does not reliably feel the urge to go will not respond to it, which further delays bowel movements and worsens constipation.
Anxiety-driven withholding
Anxiety is elevated in autism, and toileting is a common site of anxiety. A child who has had one painful bowel movement, one embarrassing experience at school, one difficult interaction with a caregiver about toileting, or one unfamiliar bathroom can develop a lasting anxiety response that manifests as withholding.
Rigid routines and public bathroom refusal
Many autistic children will only use one specific toilet. If they are at school, on vacation, or at a friend's house, they may hold their bowel movement rather than use an unfamiliar bathroom. Even one or two days of this can start the constipation cycle.
Difficulty communicating discomfort
For nonverbal or low-verbal autistic children, saying "my stomach hurts" or "it hurts to go" is not always possible. The pain and discomfort of constipation may go unspoken for weeks or months.
What Encopresis Is NOT
This section is here because it is the reframe most families need most, and the piece that most caregivers, teachers, and even some medical providers get wrong.
Encopresis is not:
Not laziness. A child with encopresis often cannot feel the urge or the accident.
Not defiance. The withholding that started the cycle is a pain-avoidance response, not opposition.
Not regression. A child who was toilet-trained and now has accidents has not gone backward developmentally. Their nervous system has adapted to a physical condition.
Not something the child controls in the moment. The distended rectum has reduced sensation. Sensation cannot be forced back into a stretched organ through consequences.
Not solved by consequences, punishment, or shame. These approaches consistently make outcomes worse by increasing anxiety, which increases withholding.
Not solved by reward charts alone. Rewards can support cooperation with the medical treatment plan, but they cannot fix a physical impaction.
Not a sign of poor parenting. The elevated rate of encopresis in autistic children is a medical pattern documented in published research. It is not a reflection of family dynamics.
Not something to be ashamed of. It affects a documented percentage of autistic children. Silence around it is one of the reasons treatment is often delayed.
How Encopresis Is Often Misread (and Why That Harms)
The soft stool that leaks around the impaction can look like diarrhea. The child may deny that anything happened, either because they truly did not feel it or because they are ashamed. Caregivers who are told "he is doing this on purpose" or "she just needs consequences" often try progressively firmer approaches, all of which fail because they do not address the physical problem.
The typical trajectory in the absence of accurate information:
Accidents begin, often after a change (new school, new bathroom, a scary bowel movement, an illness)
Parent applies consequences or motivation strategies
Child's anxiety around toileting increases
Withholding intensifies
Impaction worsens
Accidents continue or increase
Parent, teacher, or medical provider concludes the child is "not trying"
Shame accumulates in the child
Family stress accumulates
Eventually, someone recognizes that this is medical, and treatment begins, usually months after it should have
The average 12-month delay in treatment in one case series reflects this pattern.
Warning Signs and When to Worry
The signals that a child may have encopresis, or the constipation that leads to it, include:
Fewer than three bowel movements per week
Very hard, large, or painful bowel movements
Straining or crying during bowel movements
Toilet-clogging stools
Streaks of soft stool in underwear (this is often the encopresis)
What looks like diarrhea in an otherwise well child
Bloating, gas, or a visibly distended abdomen
Decreased appetite that improves after a bowel movement
Abdominal pain that comes and goes
Sudden refusal to sit on the toilet
Anxiety, tears, or resistance around bathroom time
Hiding to have a bowel movement, or hiding after an accident
Posturing to withhold: standing on tiptoes, crossing legs, arching backward, tensing the body
Behavioral indicators of GI distress (aggression, self-injury, sleep disruption, particularly in nonverbal children)
If several of these apply, and especially if the pattern has lasted more than two weeks, a pediatric evaluation is the recommended next step. Do not begin a behavioral intervention plan for the soiling before a medical workup.
What to Expect From the Medical Evaluation
Evaluation typically starts with the pediatrician and, if needed, escalates to a pediatric gastroenterologist. What to expect:
History and physical. The provider will ask about bowel movement frequency, stool consistency, pain, dietary intake, fluid intake, medications, developmental history, and family stressors. Bring a written log of two to four weeks of observations if possible.
Abdominal examination. The provider will feel the abdomen for signs of stool retention. In many cases, an experienced physician can feel a large stool mass without imaging.
Abdominal X-ray. Not always necessary, but sometimes used to confirm the degree of impaction. This is especially useful when the physical exam is difficult (for children who cannot tolerate the abdominal palpation) or when the diagnosis is unclear.
Rectal examination. Some providers will perform one. Many will not, particularly in autistic children where a rectal exam might cause more distress than it provides value. Discuss with your provider what approach is best for your child.
Screening for other causes. In a small number of cases, encopresis has a cause other than functional constipation (celiac disease, thyroid disorders, anatomic abnormalities like Hirschsprung's disease). The provider will screen for these when the history suggests it.
A treatment plan. For retentive encopresis, this almost always includes two phases: disimpaction and maintenance.
Medical Treatment: The Disimpaction and Maintenance Phases
The clinical standard for retentive encopresis, described in mainstream pediatric GI guidelines and used in the multidisciplinary research protocols on encopresis in autism, follows two clear phases.
Phase 1: Disimpaction (the "clean-out")
The goal is to physically clear the impacted stool from the colon and rectum. This is usually done with a high dose of an osmotic laxative like polyethylene glycol (PEG, sold as Miralax or Movicol/Macrogol) for a period of three to seven days. In some cases, additional interventions like stimulant laxatives, enemas, or suppositories may be used, typically under medical supervision.
The clean-out is often unpleasant for the child and family. It usually involves a period of increased soiling, urgency, and stool volume as the impaction breaks up. This is expected. The alternative is leaving the impaction in place, which perpetuates the problem indefinitely.
Phase 2: Maintenance
Once the impaction is cleared, the child is maintained on a lower daily dose of an osmotic laxative for months, sometimes longer than a year. The purpose is to keep stools soft and painless while the stretched rectum has time to shrink back to normal size and regain sensation.
Many families are surprised by how long the maintenance phase lasts. Stopping the laxative too early is one of the most common causes of encopresis returning. Follow the plan your provider gives you, and do not taper without their guidance.
Alongside the medication, maintenance includes:
Adequate daily fluid intake (schedule drinks; do not rely on the child to ask)
Dietary fiber, added gradually
Regular physical activity
Scheduled toilet sits (usually after meals, when the gastrocolic reflex is active)
After Medical Treatment: The ABA-Informed Retraining Phase
Once the impaction is cleared and the child is on a maintenance plan, behavioral strategies can meaningfully support the retraining process. This is where ABA fits in, and where a well-trained behavior team can help the child rebuild toileting skills without the shame, coercion, or pressure that made the original problem worse.
Common ABA-informed strategies for encopresis retraining:
Scheduled toilet sits. Sitting on the toilet at consistent times each day (usually after breakfast and dinner), for a set duration (often 5 to 10 minutes), whether or not the child feels the urge. This uses the natural gastrocolic reflex and rebuilds the connection between eating and eliminating.
Positive reinforcement for sitting. Reinforcement for sitting on the toilet, separate from and in addition to reinforcement for actual bowel movements. This is critical because the child cannot always produce a bowel movement on command, and reinforcing only bowel movements creates pressure that can restart the withholding cycle.
Sensory-informed bathroom setup. Foot stools so feet are supported, warm lighting, noise-canceling headphones during flushing, a preferred book or fidget to reduce anxiety, a specific toilet the child feels comfortable using, and a consistent visual schedule.
Structured data collection. Bowel movements, sits, accidents, and any warning signs recorded daily and reviewed with the medical team.
Communication training. For children who can benefit from it, explicit teaching of vocabulary or AAC symbols to communicate the urge to go, request help with clothing, or ask to use the bathroom.
Reduction of anxiety-based avoidance. Gradual desensitization to unfamiliar bathrooms, especially at school, so the child does not need to hold all day.
Family coaching. The most important behavioral piece is often the family's response. Coaching parents on how to respond calmly to accidents (no punishment, no dramatic reaction, matter-of-fact clean-up) protects the child from the shame that fuels the cycle.
Multidisciplinary interventions for encopresis in autistic children that combine medical treatment with structured behavioral toilet-sit protocols show meaningfully better outcomes than either approach alone, based on ongoing clinical research. The two components are not alternatives. They are sequential and complementary.
Supporting Your Child Through It
The medical and behavioral work is only part of what a child with encopresis needs. The emotional dimension matters as much, especially for children old enough to feel ashamed.
Normalize matter-of-factly. Talk about bowel movements the way you talk about brushing teeth or eating dinner. Reducing the emotional charge around it reduces the child's shame.
Never punish or shame accidents. Ever. Even when a shirt is ruined. Even when it is the third accident of the day. Every punishment reinforces the anxiety that drives the withholding.
Clean up privately and calmly. Do not summon siblings, take photos, or discuss accidents at length. Change clothes matter-of-factly. Move on.
Communicate with the school. Teachers, aides, and school nurses need to understand that this is medical, not behavioral, and that the child needs access to a private bathroom, extra time, and no consequences. A brief note from your pediatrician can help.
Explain the plan to the child in age-appropriate terms. Many children feel better when they understand that this is a medical condition, that many other kids have it, and that the plan will work over time.
Take care of yourself. Encopresis is genuinely exhausting for families. Talking to a therapist, joining a support community, or connecting with other parents of children with similar challenges can make a real difference.
Expert Autism Support Across the Southeast
Blossom ABA Therapy supports families across Georgia, Tennessee, Virginia, North Carolina, and Maryland with in-home and center-based ABA therapy. Our Board Certified Behavior Analysts (BCBAs) recognize that toileting challenges in autistic children are often more medically complex than they first appear, and we work in coordination with pediatricians and pediatric gastroenterologists to build treatment plans that support the whole child.
Our services include:
Comprehensive autism evaluations by licensed professionals
In-home ABA therapy tailored to each child's needs
Center-based programs focused on skill-building and independence
Toileting support integrated with medical treatment plans
Parent coaching for family response strategies that protect against shame and anxiety
Coordination with pediatricians, pediatric gastroenterologists, and school teams
If you are navigating encopresis with your child and would like support building the behavioral piece alongside your medical team's plan, contact us. We are always happy to talk through what a coordinated approach could look like for your family.
Continue Learning About Autism Support
Gastrointestinal Issues in Autistic Children: A Parent's Guide
Signs of Autism in Kids: Detection, Intervention, and How ABA Can Help
Frequently Asked Questions
1. What is encopresis and how is it different from a toileting accident?
Encopresis is the repeated involuntary passage of stool in inappropriate places (usually into clothing) in a child aged 4 or older who has already achieved bowel control. It is different from a young child still learning to use the toilet. In 85 to 95% of cases, encopresis is caused by chronic constipation. The rectum becomes distended and loses sensation, and softer stool leaks around the impacted mass without the child feeling it happen.
2. Is encopresis a behavior problem?
No. Encopresis is a medical condition. Children with encopresis are not soiling on purpose. The withholding that started the cycle is usually a natural pain-avoidance response, and by the time overt soiling appears, the child often cannot feel the accident occurring because the stretched rectum has reduced sensation. Discipline, consequences, and shame consistently make encopresis worse by increasing anxiety and withholding.
3. Why is encopresis more common in autistic children?
Multiple factors contribute. Chronic constipation is more common in autistic children (research shows 3.8 times the rate of neurotypical peers). Sensory sensitivities around toileting can trigger withholding. Altered interoception may reduce awareness of the urge to go. Anxiety and rigid routines can lead to holding at school or in public. Difficulty communicating discomfort means the underlying constipation can go unaddressed for weeks or months.
4. How do I know if my child needs to see a doctor about encopresis?
If your child is having bowel movements fewer than three times per week, having very hard or painful bowel movements, showing streaks of soft stool in underwear, has a visibly bloated abdomen, is refusing to sit on the toilet, or has any of the warning signs listed in this article for more than two weeks, schedule a pediatric evaluation. Do not begin a behavioral plan for the soiling before a medical workup.
5. What does medical treatment for encopresis usually involve?
Two phases. First, disimpaction, a short course of a high-dose osmotic laxative (usually PEG, sold as Miralax or Movicol) to physically clear the impacted stool. Second, maintenance, a lower daily dose of the same medication for months, sometimes longer than a year, to keep stools soft while the stretched rectum recovers. Alongside the medication, families support the process with scheduled fluid intake, gradual fiber increases, physical activity, and scheduled toilet sits.
6. When should behavioral or ABA-based strategies be added?
After the medical treatment has cleared the impaction and the child is on a stable maintenance plan. Behavioral strategies cannot fix a physically distended rectum with reduced sensation. Once the medical piece is in place, ABA-informed strategies (scheduled toilet sits, positive reinforcement for sitting, sensory-informed bathroom setup, gradual desensitization) can meaningfully support the retraining process.
