# Diaper Rash and Baby Eczema: Causes, Care and When to Call

> How to treat everyday diaper rash, spot yeast, care for baby eczema day to day, and know which rashes need a call.

Stage: baby - Topic: Everyday care - Page: https://www.askcladle.com/guides/baby/diaper-rash-and-baby-eczema

Grounded in: AAP HealthyChildren guidance on diaper rash, eczema (atopic dermatitis) and cradle cap, and American Academy of Dermatology guidance on caring for a baby's eczema. Summarized in Cradle's own words; none of these sources endorse Cradle. General information, not medical advice.

Reviewed: 2026-11

## TLDR

- Diaper rash: change often, clean gently, give diaper-free time and use a thick zinc or petroleum barrier.
- Beefy red rash into the creases with spots at the edges is likely yeast and needs an antifungal; pus bumps or blisters need a look.
- Eczema: moisturize generously at least once or twice a day and after short lukewarm baths. Don't cut foods without the doctor's advice.

## Diaper rash: the common kind

- Red, sometimes shiny skin on the parts that touch the diaper most (bottom, thighs, genitals),
  usually sparing the deep skin folds. Caused by wetness, stool, rubbing and sometimes new wipes,
  foods or diarrhea.
- **Change often:** check and change soon after wet or dirty diapers, including once at night if
  the rash is bad.
- **Clean gently:** warm water and a soft cloth, or fragrance-free, alcohol-free wipes. Pat, don't
  rub, and let the skin dry fully.
- **Barrier cream:** a thick layer of zinc oxide paste or petroleum jelly at every change. You
  don't need to scrub it all off each time; wipe away the soiled layer and add more.
- **Air time:** a few minutes to an hour diaper-free on a towel each day.
- Go up a diaper size or loosen it a little. Skip baby powder and talc, which can be inhaled.
- Most irritant rashes clear in 2-3 days with this care.

## When it might be yeast or infection

- **Yeast (candida):** bright, beefy red skin that goes into the creases, with small red spots or
  bumps at the edges. It often follows antibiotics or a rash that has lasted more than 2-3 days.
  It needs an antifungal cream, so call the pediatrician.
- **Bacterial:** yellow crusts, pus bumps, blisters or open sores need a look within a day, sooner
  with fever. A bright red rash around the anus can be strep and also needs a check.

## Baby eczema (atopic dermatitis)

- Dry, rough, itchy patches, often starting at 2-6 months on the cheeks, forehead, scalp and the
  outside of the arms and legs. In older babies and toddlers it moves to the elbow and knee creases,
  wrists and ankles. The diaper area is usually spared.
- It comes and goes, is not contagious, and many children outgrow it or improve a lot by school age.
- Eczema, especially severe eczema, raises the chance of food allergy, so early allergen
  introduction matters; see the introducing common allergens guide. Food is rarely the cause of a
  flare, though, so don't cut foods without the doctor's advice.

## Daily eczema care

- **Moisturize at least once or twice a day,** and after every bath: a thick, fragrance-free cream
  or ointment works better than a thin lotion. Use plenty.
- **Short, lukewarm baths,** about 5-10 minutes, with a small amount of gentle, fragrance-free
  cleanser only where needed. Pat dry and moisturize within a few minutes.
- **Soft fabrics:** cotton next to the skin; fragrance-free detergent; avoid wool.
- **Common triggers:** heat and sweating, drool and food on the face, dry winter air, fragrances,
  rough fabrics, and colds. Keep nails short and use mittens at night if scratching is bad.
- For flares, the pediatrician may suggest a mild steroid cream or ointment for short periods. Use
  it exactly as directed; used this way it is safe and helps the skin heal.

## Cradle cap

Greasy yellow scales on the scalp, sometimes the eyebrows or behind the ears. Harmless and not
itchy. See the newborn skin guide: loosen with a little oil, wash, and brush gently.

## When to check in

Mention it to the pediatrician if:
- Diaper rash isn't better after 2-3 days of care, keeps coming back, or looks like yeast.
- Eczema isn't controlled with daily moisturizing, keeps your baby up scratching, or covers large
  areas.
- Eczema looks infected: oozing, yellow crusts, or pus bumps.

Get same-day care for a temperature of 100.4°F (38°C) or higher in a baby under 3 months (with or
without a rash), blisters, pus or spreading redness with fever, a baby who seems sick, or clusters
of small, punched-out blisters in eczema patches (possible herpes virus infection); purple-red
spots that don't fade when you press a glass on them mean 911 or the ER.