Nappy Rash

It can be more than a little distressing when a baby has nappy rash – for them and the people who love them. And in some strange way, many of us still view nappy rash as a sign that we’re not doing all we can to care for our babies. But nappy rash has many causes, many have nothing to do with infrequent nappy changes or hygiene. There are a few reasons and risk factors, such as pre-existing skin conditions which can make nappy rash more common.

It can be helpful to know how to treat nappy rash so it clears and to prevent it from getting worse.

What is nappy rash?

Nappy rash is a rash which affects the baby’s skin covered by a nappy. It can range in severity from a very mild pink discolouration of their skin to blisters or red bleeding abrasions. Nappy rash can be confined to one small patch of skin or it can spread all over the nappy area. When the skin is cleaned and wiped, this can cause discomfort or itching and the baby can protest.

Nappy rash can crop up between nappy changes or be present for days or even weeks at a time.

What causes nappy rash?

  • Sensitive skin which reacts easily when exposed to wee or poo. Both contain ammonia and this can cause nappy rash.
  • A thrush infection, caused by Candida Albicans, a yeast which thrives in warm, moist areas. Mothers with vaginal thrush can pass on the organism during birth.
  • A breakdown in the integrity of the baby’s skin. Friction can cause increased irritation.
  • Particular foods causing a skin reaction.
  • Medications such as antibiotics.
  • Reactions to baby wipes, creams or nappies.
  • Infrequent nappy changing.
  • Not cleaning all the wee and poo from the baby’s skin.

Nappy rash is generally caused by the baby’s wee or poo creating moisture against the baby’s skin. Nappies and clothing create friction, causing their skin to react, becoming red and sore.

Potential complications of nappy rash

Any breakdown in the integrity of the skin can lead to an infection. Antibiotic cream is sometimes needed if there are bacteria causing the nappy rash. If severe and left untreated, nappy rash can cause a systemic infection and the baby may need oral antibiotics.

Nappy rash is generally not painful but it can be irritating and cause the baby to be unsettled.

Preventing nappy rash

  • Change your baby’s nappy often and use a good quality barrier cream on their skin.
  • Warm the cream between your fingers before smearing it on your baby’s skin. This will help the cream to go on more gently and not ‘drag’ their skin.
  • Use warm water or gentle, hypo-allergenic wipes to clean your baby’s skin. Dry their skin with a soft cloth before you put a clean nappy back on.
  • Wash your own hands after you change your baby’s nappy.
  • Avoid using bubble baths and strong smelling washes and soaps on your baby’s skin. Instead, use a mild baby wash or soap which matches their skin’s pH – 6.3-7.5.

Nappy rash treatment

Generally, nappy rash clears in a couple of days. Nappy rash treatments can range from the mild e.g. more frequent changing, to prescribed creams/ointments.

  • Change your baby’s nappy regularly. At least 6-8 nappy changes each day is the minimum.
  • Use water or gentle, non-irritant wipes to clean your baby’s skin every time you change their nappy.
  • Be very careful that you’re cleaning the folds of their skin and removing all the wee and poo.
  • Use a gentle barrier cream after cleaning your baby’s skin.
  • If your baby is a boy, don’t try to retract the foreskin.
  • Give your baby some time each day to kick freely without their nappy on.
  • Make sure you’re using the right size nappy for their age and weight. Nappies which are too tight can cause rubbing and friction.
  • Avoid using plastic pants (pilchers) outside cloth nappies.
  • Don’t use antiseptic wash or wipes on your baby’s nappy rash. Both will aggravate their skin even more.
  • Anti-fungal creams or ointments target the yeast organism which is causing a fungal rash.
  • Anti-inflammatory creams such as Hydrocortisone remove redness and sensitivity.

When to see a healthcare professional

  • If your baby’s nappy rash is not clearing after few days.
  • If the rash is spreading or getting worse.
  • If the rash is spotty and looks like small pimples. A thrush infection can create redness, with shiny bright red patches and pimples around the edges. Anti-fungal creams can be bought from a pharmacist without a prescription.
  • If the nappy rash has any blisters or crusts.
  • If your baby has a temperature or seems unwell.
  • If your baby is bothered by the rash.
  • If there are any changes in your baby’s behaviour, their feeding or their sleep.

5 top tips on how to treat nappy rash

  1. Change your baby’ nappy frequently – every time they wee or poo.
  2. Use good quality disposable nappies which will help to draw moisture away from your baby’s skin and will be more absorbent.
  3. Remember that prevention is the best strategy.
  4. Use a barrier cream on your baby’s skin to prevent the wee or poo coming into contact with their skin. Use a thick enough layer that you can’t see their skin through the cream.
  5. Think about the foods your baby has been eating. Acidic foods such as fruit and tomatoes can cause skin irritation through poos.

Remember, in the process of a rash clearing, the skin can be very sensitive. It can take a few days for the skin to heal and return to normal.


My baby’s nappy rash isn’t clearing, what should I do?

Ask your Child Health nurse to have a look. Sometimes a nappy rash is caused by thrush which needs a special anti-fungal cream to treat it.

I usually use cloth nappies for my baby, would disposables help clear their nappy rash?

Cloth nappies aren’t as good at drawing moisture away from the baby’s skin – a risk factor for nappy rash. Consider using disposables at least until the rash has cleared or overnight when you’ll be changing their nappies less frequently.

Written for Huggies by Jane Barry Midwife and Child Health Nurse on 29/04/20.