Is it normal for a 4-year-old to experience urinary incontinence after successful toilet training?

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Last updated: April 30, 2025View editorial policy

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From the Guidelines

Yes, it is normal for a 4-year-old to have occasional accidents even after successful potty training. Regression in toilet habits can happen for various reasons including developmental changes, stress, being too engaged in activities to recognize bathroom signals, or simply being tired. Common triggers include starting preschool, arrival of a new sibling, moving to a new home, or other life changes. These accidents typically resolve with patience and positive reinforcement. To help manage this situation, maintain a consistent bathroom schedule, remind your child to use the toilet before leaving home or starting activities, avoid punishment for accidents, praise successful toilet use, and ensure easy access to bathrooms. If accidents happen frequently, are accompanied by pain, unusual urine color, or increased thirst, or if they persist for several weeks without improvement, consult your pediatrician to rule out medical causes such as urinary tract infections or constipation. According to the most recent study 1, toilet training in children with normal urinary concentrating ability should be performed as usual, but accidents can be more frequent due to large urine volumes. The study also reports a high incidence of night incontinence in children with urinary issues, with urine continence at night achieved at a median age of 8–11 years.

Some key points to consider:

  • Maintain a consistent bathroom schedule to help your child stay on track
  • Remind your child to use the toilet before leaving home or starting activities to prevent accidents
  • Avoid punishment for accidents, as this can create negative associations and make the situation worse
  • Praise successful toilet use to encourage good habits and build confidence
  • Ensure easy access to bathrooms to make it easier for your child to take care of their needs
  • If accidents persist or are accompanied by other symptoms, consult your pediatrician to rule out underlying medical issues.

It's essential to approach this situation with patience and understanding, as every child develops at their own pace. With positive reinforcement and consistent support, your child can overcome occasional accidents and achieve long-term success with potty training.

From the Research

Accidents after Successful Potty Training

  • Accidents after successful potty training can be a common occurrence in young children, including 4-year-olds.
  • Research studies 2 suggest that delays in completing toilet training by 4 years of age may not be related to psychological problems, and these children can be effectively managed by primary care health providers employing evidence-based toilet training protocols.
  • However, the provided studies do not directly address the issue of accidents after successful potty training, focusing instead on urinary tract infections, urinalysis, and toilet training completion.
  • There is limited information available in the provided studies to determine if accidents after successful potty training are normal for a 4-year-old child.

Urinary Tract Infections and Accidents

  • Some studies 3, 4, 5, 6 discuss urinary tract infections, which can cause accidents in children, but they do not specifically address the topic of accidents after successful potty training.
  • These studies focus on the diagnosis and treatment of urinary tract infections, rather than the normalcy of accidents in young children.
  • The relationship between urinary tract infections and accidents in 4-year-old children is not explicitly explored in the provided studies.

Toilet Training and Accidents

  • One study 2 compares the psychological functioning of children who are not toilet trained by their 4-year-old well-child care visit with their toilet-trained peers, but it does not discuss accidents after successful potty training.
  • The study finds no clinically or statistically significant differences between the two groups on parents' reports of internalizing and externalizing behavior.
  • However, this study does not provide information on the frequency or normalcy of accidents in 4-year-old children who have completed toilet training.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Psychological differences between toilet trained and non-toilet trained 4-year-old children.

Journal for specialists in pediatric nursing : JSPN, 2021

Research

Urinalysis: a comprehensive review.

American family physician, 2005

Research

History and physical examination plus laboratory testing for the diagnosis of adult female urinary tract infection.

Academic emergency medicine : official journal of the Society for Academic Emergency Medicine, 2013

Research

Urinary Tract Infection.

Annals of internal medicine, 2017

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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