What should you know about persistent nappy rash?

Nappy rash affects skin covered by a nappy, where warmth, wetness, stool, and rubbing can weaken the skin barrier. A rash that does not settle may be maintained by frequent contact with urine or stool, fragranced products, tight nappies, or loose stools. Yeast can cause a bright red rash with small spots around its edge, while bacterial infection may cause weeping, crusting, or rapidly worsening soreness. Some rashes resemble nappy rash but need a different diagnosis.

Change wet or soiled nappies promptly and rinse the area with lukewarm water or a fragrance-free cleanser. Pat rather than rub, allow short nappy-free periods, and use a thick protective barrier on clean, dry skin. Avoid talcum powder, scented wipes, harsh antiseptics, and scrubbing. If a clinician suspects yeast, they may recommend a topical antifungal treatment; an emollient can support the skin barrier between changes.

Arrange a medical assessment when the rash persists despite careful changes and barrier care, keeps returning, or is painful enough to disturb feeding or sleep. Seek prompt care for fever, marked swelling, pus, blisters, open sores, spreading redness, or a child who seems unusually unwell. A clinician can inspect the pattern and decide whether testing or prescription treatment is needed.

Ask whether the pattern suggests irritant dermatitis, yeast, bacterial infection, or another condition; which cleanser and barrier are suitable; how long to try the plan; and which changes should trigger a review.