Potty Training Regression: Why It Happens and How to Handle It

You spent weeks getting your child out of nappies, celebrated the milestone, and then, seemingly out of nowhere, the accidents start again. Potty training regression is incredibly common, almost always temporary, and rarely a sign that anything is wrong. Here is why it happens and how to handle it calmly.

What regression actually is

Regression is when a child who was reliably using the potty or toilet starts having frequent accidents again. It can happen weeks or even months after training and is best thought of as a wobble, not a failure or a step backwards in their ability.

Common triggers

Most regressions are linked to change or stress, even happy change. Common culprits include a new baby, moving house, starting or changing nursery, illness, a holiday, or simply a lot going on at once. Constipation is another very common and often overlooked cause, as a backed-up tummy can lead to leaks and accidents.

Rule out physical causes first

Before assuming it is behavioural, it is worth ruling out physical reasons. Signs such as pain or stinging when weeing, needing to go very often, blood, an unpleasant smell, or being unusually thirsty can point to a urine infection or constipation, both of which are common in young children and easily treated. If you notice any of these, see your GP.

How to handle it

• Stay calm and never punish or shame. Accidents are not deliberate, and getting cross tends to make anxiety, and therefore accidents, worse.
• Go back to basics. Offer regular, low-pressure potty visits, for example after meals and before outings, rather than waiting for them to ask.
• Praise the wins and keep your reaction to accidents low-key and matter-of-fact.
• Address the trigger. If there has been a big change, extra reassurance and one-on-one time often resolve the regression on their own.

When to see a doctor

Most regressions pass within a few weeks. See your GP if accidents come with pain, blood, a high temperature, excessive thirst, or if they go on for a long time or you are worried, so any infection or constipation can be ruled out and treated.

Common questions

Why has my potty trained child started having accidents again?

Regression is usually linked to change or stress, such as a new baby, a house move, starting nursery, illness or constipation. It is common and almost always temporary.

Should I put my child back in nappies after a regression?

It is usually better to go back to basics with regular, low-pressure potty visits and reassurance rather than straight back to nappies, though pull-ups overnight or for outings can reduce stress while things settle.

When should I see a doctor about potty regression?

See your GP if accidents come with pain or stinging when weeing, blood, a high temperature, unusual thirst, or if the regression goes on for a long time, so an infection or constipation can be ruled out.