Autism potty training regression
Check for constipation and a urinary tract infection first. A doctor should rule out a physical cause before you change anything else. If your child pees on the potty but holds poop, read autism poop withholding.
Once medical reasons are ruled out, look at what changed in the last few weeks. Regression is usually a response to something.
The American Academy of Pediatrics says regression "usually doesn't last very long. In many cases, the child picks up where she left off in toilet training after a few days or weeks." That is about toddlers in general. A setback is not a failure of the whole plan.
Rule out the medical causes first
Start with the body. Cleveland Clinic's guide to potty training regression says of medical causes: "The most common culprits are urinary tract infections (UTIs) and constipation."
Constipation matters more for autistic children. A 2026 study of 578,807 autistic children aged 6 to 17 found 22% had constipation, compared with 9% of non-autistic youth.
Outside source, not affiliated with Budding FuturesYour first response when this happens should be to have them examined by their pediatrician to be sure the cause is not physical. Regression sometimes signals an infection or other disorder that requires medical treatment.
For autistic children there is an extra reason to check. A 2021 case report and review from KK Women's and Children's Hospital in Singapore explains it:
Outside expert, not affiliated with Budding FuturesChildren with autism spectrum disorder (ASD) with rigidities, anxiety or sensory preferences may establish a pattern of holding urine and stool, which places them at high risk of developing bladder bowel dysfunction (BBD).
The same paper is hopeful about the fix: "Simple strategies such as parental education, maintaining a bladder bowel diary and treatment of constipation may result in resolution of symptoms."
Budding Futures does not diagnose. Take this to your pediatrician before you change anything else, because a behavior plan layered over a medical problem just adds pressure.
Causes of potty training regression in autistic children
Once a doctor has looked at the medical side, work through what changed in the last few weeks. Here is what each cause looks like in the sources.
| Cause | What the source says |
|---|---|
| Constipation | "Persistent constipation can overstretch the rectum, reduce the child's ability to sense the need to defecate, and lead to encopresis," which is the medical word for soiling. American Family Physician, 2019 |
| Urinary tract infection | Of medical causes, "The most common culprits are urinary tract infections (UTIs) and constipation." Cleveland Clinic, 2022 |
| Illness, a new caregiver, new medication | A 2021 review notes that "changes in the child's routine, such as illness, change of caregivers and change in medication, may cause regression in toilet training." BMJ Case Reports, 2021, summing up earlier research |
| A change at home or school | The American Academy of Pediatrics lists "An upcoming or recent move to a new home" and "The mother's pregnancy or the birth of a new sibling" among common causes. HealthyChildren.org |
| Stress | "Stress is the most common reason for potty training regression." Cleveland Clinic, 2022, writing about toddlers in general |
| The bathroom itself | "Bathrooms may feel cold, lights may be too bright, toilet paper may feel rough." Elizabeth Cross, Ph.D., Kennedy Krieger Institute, quoted by SPARK, 2023 |
| Holding it in | "Stool withholding is a more extreme version of stool toileting refusal in which the child deliberately avoids defecating and often progresses to constipation." American Family Physician, 2019 |
If accidents only happen in one place, you are looking at a setting problem rather than a skill problem, and the fix is different.
What not to do
Do not punish accidents. American Family Physician is plain about it: "Negative language and punishment should be avoided." A child who is afraid of the reaction has a reason to hide the next accident.
Outside expert, not affiliated with Budding FuturesThe more anxiety that the parent has, the more that is going to transfer to the child, which certainly won't help the situation.
Outside expert, not affiliated with Budding FuturesWe want to make toilet training a positive experience for the child.
One parent put the principle better than any clinical guidance we could write: they made it a rule never to make their child feel bad about something outside their control, because the shame sticks for years.
Our approach is assent-based and play-based for exactly this reason. Our BCBAs rebuild from where a child actually is, and we coach parents through it. The full approach is on the ABA therapy for potty training page.
A four-week reset plan
This is our plain-language plan, built from the sources on this page. It is not medical advice, and your doctor's instructions come first.
- Week 1: see the pediatrician and start a diary. Ask about constipation and a urine test. Write down every pee, poop and accident for seven days, with the time and what was happening. The BMJ review lists "maintaining a bladder bowel diary" among the simple strategies that can clear up symptoms. Print our 7-day toilet diary (PDF).
- Week 2: go back to the routine that worked. Same bathroom, same words, same order of steps as when training was going well. If the diary points at one place, fix that place first: a cold seat, a loud dryer, a bright light. As Cross puts it, "bathrooms can be scary places."
- Week 3: keep it calm and positive. Clean up without comment and notice the successes. American Family Physician: "Negative language and punishment should be avoided." Cleveland Clinic adds: "Keep your tone nonjudgmental and positive."
- Week 4: read the diary and decide. If accidents are dropping, keep going. If nothing has changed, or your child is in pain, go back to the pediatrician and bring the diary. A pause is allowed too. The same article says "temporary (one- to three-month) breaks are acceptable to avoid negative attitudes and conflicts."
Frequently asked questions from parents
Q: Why has my potty trained autistic child started having accidents?
A: The usual suspects are constipation, a urinary tract infection, stress, or a change in routine such as an illness, a move or a new school term. Start with the doctor.
Q: Should I see a doctor about regression?
A: Yes, before changing anything behavioral. Constipation and urinary tract infections are common and treatable, and neither responds to a reward chart.
Q: Is regression normal for autistic children?
A: Yes, setbacks are common. American Family Physician tells doctors to help parents "understand that accidents and setbacks are common." In a 1992 survey of 100 parents of people with autism, the most common toileting problems were urinating in places other than the toilet and constipation.
Q: Should I go back to diapers?
A: Usually not as a first move, because it can undo progress. Work out the cause first, then decide.
Q: How long does regression last?
A: It depends on the cause. For toddlers in general, the American Academy of Pediatrics says regression "usually doesn't last very long," often "a few days or weeks." We found no figure for autistic children specifically.
More on toileting and potty training
ABA Therapy for Potty Training
How Budding Futures builds a toileting plan in the home.
Night time potty training and autism
Why dry nights are a separate problem with a different cause.
Is my child ready to potty train?
The signs that actually predict readiness.
Sources
American Academy of Pediatrics, HealthyChildren.org
Potty Training Regression: see the pediatrician first, common causes, how long it lasts.
Chumpitazi et al., Am J Gastroenterol 2026
578,807 autistic children aged 6 to 17: 22% had constipation, against 9% of non-autistic youth.
Baird, Bybel and Kowalski, American Family Physician 2019
Toilet Training: Common Questions and Answers. Constipation, withholding, and why punishment should be avoided.
Raturi, Li and Wong, BMJ Case Reports 2021
A case report and review on bladder and bowel problems in autistic children.
Cleveland Clinic, 2022
Potty Training Regression: What To Do About It, with pediatrician Noah Schwartz, MD.
SPARK, 2023
What to Know About Toilet Training Your Child with Autism, with Elizabeth Cross, Ph.D.
Dalrymple and Ruble, J Autism Dev Disord 1992
Survey of 100 parents of people with autism: the most common toileting problems.
The people and organizations quoted on this page are outside sources. They are not affiliated with Budding Futures and did not review this page.
Lost ground after making progress?
Tell us what changed and when the accidents started. A BCBA can help you work out whether it is medical, sensory or a setting problem.