Your health care provider can often diagnose a yeast diaper rash by looking at your baby’s skin. A KOH test can confirm if it is candida.
Diaper Rash
Diaper rash is a skin problem that develops in the area under an infant’s diaper.
Diaper rashes are common in babies from 4 to 15 months old. They may be noticed more when babies begin to eat solid foods.
Diaper rashes caused by infection with a yeast (fungus) called candida are very common in children. Candida grows best in warm, moist places, such as under a diaper. Candida diaper rash is more likely to occur in babies who:
- Are not kept clean and dry.
- Are taking antibiotics or whose mothers are taking antibiotics while breastfeeding.
- Have more frequent stools.
Other causes of diaper rash include:
- Acids in the stool (seen more often when the child has diarrhea).
- Ammonia (a chemical produced when bacteria break down urine).
- Diapers that are too tight or rub the skin.
- Reactions to soaps and other products used to clean cloth diapers.
You may notice the following in your child’s diaper area:
- Bright red rash that gets bigger.
- Very red and scaly areas on the scrotum and penis in boys.
- Red or scaly areas on the labia and vagina in girls.
- Pimples, blisters, ulcers, large bumps, or sores filled with pus.
- Smaller red patches (called satellite lesions) that grow and blend in with the other patches
Older infants may scratch when the diaper is removed.
Diaper rashes usually do not spread beyond the edge of the diaper.
The best treatment for a diaper rash is to keep the skin clean and dry. This also helps prevent new diaper rashes. Lay your baby on a towel without a diaper whenever possible. The more time the baby can be kept out of a diaper, the better.
Other tips include:
- Always wash your hands before and after changing a diaper.
- Change your baby’s diaper often and as soon as possible after the baby urinates or passes stool.
- Use water and a soft cloth or cotton ball to gently clean the diaper area with every diaper change. Do not rub or scrub the area. A squirt bottle of water may be used for sensitive areas.
- Pat the area dry or allow to air-dry.
- Put diapers on loosely. Diapers that are too tight do not allow enough air flow and may rub and irritate the baby’s waist or thighs.
- Using absorbent diapers helps keep the skin dry and reduces the chance of getting an infection.
- Ask your provider or nurse which creams, ointments, or powders are best to use in the diaper area.
- Ask if a diaper rash cream would be helpful. Zinc oxide or petroleum jelly-based products help keep moisture away from your baby’s skin when applied to completely clean, dry skin.
- Do not use wipes that have alcohol or perfume. They may dry out or irritate the skin more.
- Do not use talc (talcum powder). It can get into your baby’s lungs.
The rash usually responds well to treatment.
Contact your child’s provider if:
- The rash gets worse or does not go away in 2 to 3 days
- The rash spreads to the abdomen, back, arms, or face
- You notice pimples, blisters, ulcers, large bumps, or sores filled with pus
- Your baby also has a fever
- Your baby develops a rash during the first 6 weeks after birth
Dermatitis – diaper and Candida; Candida-associated diaper dermatitis; Diaper dermatitis; Dermatitis – irritant contact
References
Bender NR, Chiu YE. Eczematous disorders. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 674.
Moon M, Guerrero AM, Li X, Koch E, Gehris RP. Dermatology. In: Zitelli BJ, McIntire SC, Nowalk AJ, Garrison J, eds. Zitelli and Davis’ Atlas of Pediatric Physical Diagnosis. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 8.
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