Secondary Bedwetting — When a Previously Dry Child Starts Wetting Again

Quick answer: if your child was reliably dry at night for at least six months and has now started wetting again, this is called secondary bedwetting. It accounts for about 20–25% of all bedwetting cases. The causes — and treatment — differ from primary bedwetting (a child who has never been dry). Secondary bedwetting more often has an emotional, medical or family-related trigger that needs identifying and addressing.

What is secondary bedwetting, exactly?

The clinical definition: a child who was previously dry at night for six consecutive months or more, and has now started wetting again, two or more times a week, for three months or more.

This is different from primary bedwetting (the most common type), where the child has never been reliably dry. More on causes of primary bedwetting.

What causes secondary bedwetting?

Emotional / family triggers (most common)

• New sibling — perhaps the most classic trigger. A sense of displaced attention, sometimes regression behaviours.
• Parental separation or marital conflict.
• Moving home or starting a new school.
• Bullying.
• Bereavement — a relative, a pet, anyone significant.
• Illness or hospitalisation in the family.
• Trauma — including witnessed events.

Medical triggers (always rule these out)

• Urinary tract infection (UTI) — particularly in girls. Sudden secondary bedwetting + pain when urinating + smelly urine + fever = urgent GP urine test.
• Constipation — can cause secondary bedwetting in a previously dry child if it develops.
• Type 1 diabetes — sudden bedwetting in a previously dry child with thirst, weight loss, fatigue, frequent urination → urgent GP review.
• Sleep apnoea — can develop with weight gain, large tonsils, allergies. Snoring + restless sleep + bedwetting in a previously dry child warrants paediatric sleep review.
• Pinworms — can cause urinary irritation and bedwetting in some children.
• Side effects of new medications.

What to do — step by step

1. See your GP first. A urine dipstick test rules out infection and (with blood glucose if indicated) diabetes. This is non-negotiable for secondary bedwetting because the medical causes are real and treatable.
2. Reflect on triggers. What changed in your child’s life roughly when the wetting started? Even seemingly small things matter (a friend moving away, a teacher leaving, a routine disruption).
3. Talk to your child gently. Not “why are you wetting again?” but “what’s been on your mind lately?” — open-ended, low-pressure, repeated over days. Often the cause emerges slowly.
4. Consider whether anxiety symptoms are present — daytime worry, school avoidance, separation difficulty, sleep onset trouble.
5. Take the questionnaire — Dr. Kushnir reviews secondary cases personally because the underlying picture varies more than primary bedwetting. Take it here.

How treatment differs from primary bedwetting

If a clear medical cause is found and treated, the bedwetting usually resolves on its own within weeks. If the trigger is emotional, addressing that emotional context often resolves the wetting without alarm treatment.

If neither — or if the wetting persists after addressing triggers — alarm treatment works for secondary bedwetting too, with the same protocol as primary. The pace can be slightly slower because the child has the additional context of “I was dry, why isn’t my body cooperating now?” — which is itself a kind of anxiety we work through.

Read the full step-by-step treatment guide.

How long should you wait before seeking help?

One night of wetting after a dry period — likely a one-off, especially if there was a clear stressor (overtired, ill, very thirsty before bed). No action needed.

2–3 weeks of regular wetting after months/years of dry nights — see your GP for a urine test, even if your child seems otherwise fine.

Persistent secondary bedwetting beyond 4–6 weeks — take the free questionnaire for a clinical view on the most likely cause and the best next step.

Frequently asked

Will it just go away?

Often yes — once any medical cause is treated and any emotional trigger is addressed, secondary bedwetting frequently resolves on its own. But because medical causes can be serious (UTI, diabetes), don’t just wait — see your GP first.

Should we ask our child what’s bothering them?

Yes, gently. Open-ended questions in low-pressure moments. Not at the moment of a wet bed, when the child is most likely to feel ashamed and to deny.

Could it be a urinary tract infection?

Possibly, especially in girls. Pain when urinating, blood in urine, fever, smelly urine — see your GP urgently for a urine test.

Could it be diabetes?

Rare, but type 1 diabetes can present with sudden bedwetting in a previously dry child + thirst + weight loss + fatigue. Urgent GP review with blood glucose test if these are present.