Ten reasons bedwetting treatment isn’t working — and what to do next

If you’ve tried the usual advice and your child is still wetting the bed, this is a guide for you. What follows is the checklist I go through with parents in my clinic, in the order I go through it. The most common reasons treatment does not work could be fixable — but you have to know which one applies to your child.

A note on the medications mentioned below. Desmopressin, anticholinergics, and osmotic laxatives are prescription treatments. Nothing here is a substitute for your doctor’s judgement, but knowing which questions to raise makes the next appointment much more productive.

Full article — 12-minute read

If you have followed the advices you got in the outpatient clinics and your child is still wetting the bed, this article may help you identify areas for improvement. In my clinic I regularly see families who had previous visits, prescribed therapy, and still have a child in wet pajamas in the morning. The good news is that — in most of the cases — there is a specific reason, and a specific next step.

1. Is your child following the drinking and toilet schedule?

Many children who wet the bed have a drinking pattern that could be improved. They drink too little in the morning and early afternoon, so they are thirsty in the evening. Or they drink fluids that increase urine production — milk, tea, juice — late in the day.¹

Restricting fluids in the last 2 hours before bed only works if the child has already had their recommended daily intake earlier. Without a plan, parents may spend much of the day reminding their child to drink without knowing whether the daily target has actually been reached. An even daily distribution of fluids makes the evening restriction possible.

How to plan drinking across the day

• Goal: the recommended daily intake for the child’s weight (see table).
• Schedule: split into thirds — by noon, by 4 PM, by 7 PM.
• Avoid: no drinks in the last 2 hours before bed. After 4 PM, water only.

Small facts worth checking: whether your child is drinking in the last hour without you realizing it (a common one is at the sink while brushing teeth), and whether dinner is unusually salty, spicy, or rich in proteins — both push evening thirst upward.

Alongside drinking, make sure your child urinates just before bed, and that they do not go more than 4 hours without urinating during waking hours.²

2. Is constipation present?

Constipation is one of the most common hidden causes of bladder symptoms, and it makes any other treatment less likely to succeed.³ If stools are infrequent, hard, require straining, are unusually large, or if your child soils underwear, think constipation first.

Doctors use standardised stool scales — the Bristol Stool Scale is the most widely used. Types 1 and 2 are associated with constipation.

A digital diary like BeDRY’s includes a stool diary with Bristol Stool Scale to help track bowel habits properly.

If your child wets the bed and is constipated, addressing the constipation should come first. Osmotic laxatives such as macrogol 3350 are effective and non-habit-forming — they hold water in the bowel so the stool softens and passes more easily. In long-standing cases these are usually needed for months. Ask your doctor about starting.

Alongside medication, sit the child on the toilet after breakfast and after dinner to try — this uses the gastro-colic reflex and builds the habit. Progress is slow and takes patience. If the response is poor, ask for a referral to a pediatric gastroenterologist.

3. Are there daytime symptoms?

Daytime bladder symptoms are anything your child experiences while awake:

• Urgency — a sudden, hard-to-postpone need to go
• Incontinence — involuntary leaking of urine into underwear
• Frequent urination — 8 or more times a day
• Straining — using abdominal muscles to start or maintain the stream
• Hesitancy — a delayed start to urination, often with straining
• Infrequent urination — fewer than 3 times a day
• A feeling of incomplete emptying

Daytime symptoms suggest that the underlying cause of the bedwetting may sit in bladder function itself (for example, overactive bladder). If daytime symptoms persist despite a proper drinking and toileting schedule, and the urine tests are normal, ask for a referral to a pediatric nephrologist.

For a clearer picture of the daytime pattern, keep a 2-day/3-nights bladder diary. A digital diary like BeDRY’s makes this simpler — clear instructions, automatic interpretation, and a Summary you can share with your doctor. It also lets you record leaks in detail and a stool diary alongside.

See how BeDRY worked for a 9-year-old girl with daytime urgency →

4. Small bladder capacity, or nocturnal polyuria?

Bedwetting is fundamentally caused by a mismatch between how much the bladder holds and how much urine is produced overnight. If the bladder is small, or overnight production is high, the child will wet — and a full bladder is not a strong enough signal to wake most sleeping children.

The most important diagnostic question, therefore, is: which of the two is it? The answer comes from a bladder diary kept for at least 2 days.

If the bladder is small, the guidelines from the International Children’s Continence Society recommend a bedwetting alarm or an anticholinergic.⁴

If night-time urine production is high (nocturnal polyuria), desmopressin is the standard first-line choice.^4,5

Estimated likelihood of response to desmopressin according to bladder capacity Data adapted from Eller et al. (1998). Eur Urol 1998;33(suppl 3):25–29 View table

In practice, giving desmopressin to a child who actually has a small bladder is a common reason for treatment failure.⁶ If desmopressin has been prescribed without a diary having been kept, ask your doctor whether a 2-day/3-nights bladder diary should come first — the answer changes which treatment is right.

5. Is desmopressin being taken at the right time?

The maximum antidiuretic effect of desmopressin is reached about 2 hours after it is taken.⁷ Most children with nocturnal polyuria wet in the first hours of sleep — so taking desmopressin immediately at bedtime means the peak effect happens after the most vulnerable window has already passed.

Ask your doctor whether taking desmopressin about 1 hour before bedtime — rather than at bedtime — would be more appropriate for your child. That timing lines up the drug’s peak effect with the highest-risk hours.

6. Is the dose right?

For some children the standard starting dose is not enough. Guidelines suggest reviewing the response after about 2 weeks.⁵ If the child is still wetting the bed, discuss with your doctor whether the dose should be increased.

7. Are other osmotic factors interfering?

A child with nocturnal polyuria whose kidneys concentrate urine well may respond less well to desmopressin. Kidney concentrating ability is measured with the osmolality of the first morning urine (before any fluid intake). If it is above 814 mOsm/kg,⁸ the risk of desmopressin failure is higher — and other approaches (a bedwetting alarm, or an anticholinergic) may be worth considering.

This is also the point to check whether the child is producing more urine because of another osmotic load — high calcium excretion, for example, or a dinner that is unusually rich in salt and protein. A protein-lighter, less salty evening meal can help.

8. Rule out the rare causes

If the diet, schedule, and medication are all being followed correctly and the child is still wetting, it is worth ruling out less common causes:

• Urinary tract infection
• Diabetes
• Hypercalciuria (excess calcium in the urine)
• Upper airway obstruction — snoring or mouth breathing when the child is not congested

The non-invasive tests that answer most of these are:

1. Bladder diary
2. Urinalysis and urine culture
3. Urine calcium-to-creatinine ratio
4. Ultrasound of the kidneys and urinary tract
5. Uroflowmetry

If your child snores at night or breathes through the mouth when not congested, ask for an ENT consultation. Children with enlarged tonsils and airway obstruction have higher rates of bedwetting, and surgical treatment of the obstruction has been shown to help resolve bedwetting in this group.⁹

9. Try a bedwetting alarm

A bedwetting alarm is a form of urotherapy that teaches the child to wake up when the bladder is full. Studies show it produces long-term results comparable to desmopressin, with a better durability profile:¹⁰

• Overall success: ~82% for the alarm vs. ~75% for desmopressin
• Long-term durability: 68% vs. 46%

An alarm is a sensor that detects wetness in the underwear or bedding, connected (by wire or wirelessly) to a loud or vibrating alarm. When the alarm triggers, the child wakes, silences it, and goes to the toilet. With regular use, the alarm helps the brain learn to recognize a full bladder and wake the child before bedwetting occurs.

Alarms need to be used every night, and the effect is not immediate. Expect 2–3 months of use, until the child has been dry for 14 consecutive nights - which is considered as a complete success that will most probable lead to a continued success.

10. Stay committed to the alarm — and wake the child when needed

The most common complaint I hear in clinic is: “the alarm wakes everyone except the child it is for”. This is not unusual and does not mean the device is broken. In those weeks, parents need to physically go to the child, wake them up, and walk them to the toilet — otherwise the learning loop does not close. Children who learn to silence the alarm without fully waking may also need a parent to help wake them and guide them to the toilet.

The alarm’s biggest downside compared with desmopressin is a higher drop-out rate (~20% vs. ~4%). The loud alarm disrupts everyone’s sleep, and success requires commitment. The first weeks are typically the worst. Families who are able to continue consistently — every night, for the full 2–3 months, or until 14 dry nights — are more likely to see results. Stopping too early is a common reason the alarm does not work.

When and how BeDRY fits in

Most of the questions in this checklist — small bladder vs. nocturnal polyuria, whether the drinking pattern is truly imbalanced, whether daytime symptoms are present, whether stools suggest constipation — can be answered by 2 days of careful diary keeping. BeDRY makes that easier:

• A digital diary with clear step-by-step instructions — keep it for a minimum of 2 days for bladder and drinking, 7 days for stools.
• An automatic Summary that shows bladder capacity, nocturnal urine output, and the key ratios your doctor will want to see.
• Share with your doctor — by email or your doctor’s BeDRY username, no printing needed.

Try it: start a diary in BeDRY and share the Summary with your doctor. You will leave the next appointment with a more specific plan.

In short — the order to work through

1. Follow the drinking and toileting schedule strictly for 2 weeks.
2. Treat constipation if present.
3. See a pediatric nephrologist if daytime symptoms persist.
4. If desmopressin is not working, check whether bladder capacity is small before simply continuing or escalating treatment.
5. Take desmopressin about 1 hour before bed.
6. Consider a dose increase if the standard dose is not working after 2 weeks.
7. If nocturnal polyuria is present with high urine osmolality and normal bladder capacity, consider a bedwetting alarm or an anticholinergic.
8. Rule out rare causes.
9. Try a bedwetting alarm.
10. Stay committed to the alarm — and wake the child when needed.

Bedwetting — in practice

Bedwetting in a 5-year-old boy

Wet every night since potty training, with no daytime symptoms at all. The bladder was a normal size — the diary showed that too much urine was being produced at night.

See how BeDRY worked through this case

References

1. Ma Y, Liu X, Shen Y. Behavioral factors for predicting severity of enuresis and treatment responses in different compliance groups receiving behavioral therapy. Pak J Med Sci. 2017;33(4):953–958. doi:10.12669/pjms.334.12922
2. DiBianco JM, Morley C, Al-Omar O. Nocturnal enuresis: A topic review and institution experience. Avicenna J Med. 2014;4(4):77–86. doi:10.4103/2231-0770.140641
3. Burgers RE, Mugie SM, Chase J, et al. Management of functional constipation in children with lower urinary tract symptoms: report from the Standardization Committee of the International Children’s Continence Society. J Urol. 2013;190(1):29–36. doi:10.1016/j.juro.2013.01.001
4. Nevéus T, Fonseca E, Franco I, et al. Management and treatment of nocturnal enuresis — an updated standardization document from the International Children’s Continence Society. J Pediatr Urol. 2020;16(1):10–19. doi:10.1016/j.jpurol.2019.12.020
5. Vande Walle J, Rittig S, Bauer S, et al. Practical consensus guidelines for the management of enuresis. Eur J Pediatr. 2012;171(6):971–983. doi:10.1007/s00431-012-1687-7
6. Eller DA, Austin PF, Tanguay S, et al. Daytime functional bladder capacity as a predictor of response to desmopressin in monosymptomatic nocturnal enuresis. Eur Urol. 1998;33(Suppl 3):25–29. doi:10.1159/000052238
7. Juul KV, Erichsen L, Robertson GL. Temporal delays and individual variation in antidiuretic response to desmopressin. Am J Physiol Renal Physiol. 2013;304(3):F268–278. doi:10.1152/ajprenal.00502.2012
8. Abdović S, Cuk M, Hizar I, et al. Pretreatment morning urine osmolality and oral desmopressin lyophilisate treatment outcome in patients with primary monosymptomatic enuresis. Int Urol Nephrol. 2021;53(8):1529–1534. doi:10.1007/s11255-021-02843-5 · PubMed 33774753
9. Basha S, Bialowas C, Ende K, et al. Effectiveness of adenotonsillectomy in the resolution of nocturnal enuresis secondary to obstructive sleep apnea. Laryngoscope. 2005;115(6):1101–1103. doi:10.1097/01.MLG.0000163762.13870.83
10. Peng CC, Yang SS, Austin PF, et al. Systematic Review and Meta-analysis of Alarm versus Desmopressin Therapy for Pediatric Monosymptomatic Enuresis. Sci Rep. 2018;8(1):16755. doi:10.1038/s41598-018-34935-1