Regression: when accidents come back

Weeks of progress, then puddles again. It’s common, it usually has a reason, and it nearly always passes.

It had all clicked. Then, out of nowhere, the accidents are back, or your child is asking for nappies again. It’s easy to feel you’re back to square one. You almost certainly aren’t.

Why it happens

The AAP describes regression as a child losing toilet skills they seemed to have mastered. It lists common triggers:

a change in childcare, such as a new childminder or babysitter, or starting nursery
a new baby, or a parent being pregnant
illness, in the child or someone in the family
a death in the family, or conflict or separation at home
moving house
constipation or painful poos
urinary tract infections and other medical conditions

The list is a mix of life changes and physical causes, which is why the first step matters.

Step one: rule out a physical cause

The AAP recommends checking with a doctor first, because regression can sometimes signal an infection or other problem that needs treatment. NHS guidance likewise suggests contacting your health visitor or GP if training is disrupted or your child is struggling. Signs to mention include pain when weeing, hard or infrequent poos, soiling, or your child seeming unwell.

Step two: check the basics

Drinks: has your child been drinking less? (ERIC recommends 6 to 8 drinks a day.)
Poo: are poos still soft, and at least every other day?
Sitting: can your child sit comfortably, with their feet supported?
Changes: has anything shifted at home or nursery, or in the routine?

Step three: lower the pressure

The AAP suggests some one-to-one time with your child, talking to their other carers so everyone is consistent, and keeping the potty readily available, with familiar things around it if you’ve moved house. Keep reactions to accidents calm and praise effort as you did at the start.

If the regression goes on for a month or more, the AAP says a temporary break from training is reasonable if it eases your child’s stress. Whatever you decide, keep it matter-of-fact rather than a punishment.

How long does it last?

According to the AAP, most regressions settle within days or weeks. The skills haven’t gone; they’re just being crowded out for a while.

In the US

The AAP’s advice is to see your pediatrician first to rule out a physical cause such as a UTI or constipation, then work on the emotional side. Starting a new daycare or preschool program is a common trigger.

When to get help

See your GP (or paediatrician) if regression comes with pain, blood, fever, hard poos or soiling. The NHS also suggests seeing a GP if bedwetting starts again after more than six months of dry nights.