Poo up the back, down the legs and all over the car seat: almost every parent faces a nappy explosion at some point, usually at the worst possible moment. Diaper blowouts are common, especially with young breastfed babies, but a few changes to size and fit can prevent most of them. Here is why they happen and how to deal with them.
Quick answer: preventing diaper blowouts
- Check the size: a nappy that is too small or too big leaks.
- Fasten snugly with tabs level and leg cuffs pulled out.
- Change soon after poos and before long car rides.
- Blowouts are normal with runny newborn poo and usually ease as babies grow.
Why blowouts happen
- runny poo in young babies, especially breastfed babies
- the wrong nappy size
- tabs fastened unevenly or too loosely at the back
- sitting in a car seat or bouncer, which pushes poo upwards
- a big poo after a growth spurt or illness
How to prevent them
- Go by weight and fit, not the age on the pack. See diaper sizes by age and weight.
- Fasten the back slightly higher than the front.
- Pull out the leg ruffles after fastening.
- Try a different brand; fit varies a lot between brands.
- Size up if the nappy no longer covers the bottom fully. See signs your baby needs a bigger nappy.
Quick clean-up
- Lay down a changing mat and towel.
- Pull the vest down over the shoulders and legs instead of over the head.
- Clean the skin well with water or wipes, then pat dry.
- A quick rinse or bath may be easier for big messes.
- Put soiled clothes in a wet bag.
Removing stains
- rinse in cold water first, as hot water sets stains
- soak or pre-treat with a stain remover
- wash as usual and dry in sunlight, which naturally fades poo stains
Out and about? See how to change a diaper in public.
When to talk to your doctor
- very watery poo many times a day, with fewer wet nappies (possible dehydration)
- blood or mucus in the poo
- white, pale grey or black poo after the first days
- vomiting with diarrhoea, fever or your baby seems unwell
Frequently asked questions
Are blowouts a sign of a problem?
Usually not. They are common with soft newborn poo.
Do cloth nappies prevent blowouts?
Many parents find cloth nappies contain runny poo well, especially with good elastic.
When do blowouts stop?
They often ease once poo firms up after starting solids.
Sources
- NHS: Your baby’s poo; How to change your baby’s nappy
- American Academy of Pediatrics, HealthyChildren.org: Stool colour and consistency
This guide is general information. If you are worried about your baby’s poo or health, talk to your doctor.