Bacterial infection in nappy rash

Clues include rapidly worsening redness, tenderness, weeping, pus, crusts, blisters or sores. These features are different from uncomplicated irritation and should not be treated with leftover medicine.

Urine, stool, moisture and rubbing weaken the skin barrier. Bacteria can then enter cracked or raw areas. Infection may remain local or spread beyond the part covered by the nappy.

Yeast can also affect warm skin folds and requires different medicine. Because bacterial, yeast and irritant rashes can overlap, a clinician examines the distribution, edges, folds, spots and any discharge before choosing treatment.

Change wet or soiled nappies promptly. Clean with lukewarm water and soft cotton or a fragrance-free wipe, then pat dry. Allow nappy-free time when practical and apply a simple barrier ointment to protect unbroken skin.

Do not scrub, pop blisters or apply fragranced products. Avoid antibiotic, antifungal or steroid creams unless a clinician has advised the specific product and area. Treatment for confirmed bacterial infection may be topical or oral, depending on severity and spread.

Seek urgent medical advice if the baby has fever, unusual sleepiness, poor feeding, fewer wet nappies, rapidly spreading redness, significant swelling, severe pain, blisters or darkening skin. A very young infant who seems unwell needs prompt assessment.

Arrange a routine appointment when the rash is not settling with careful nappy care, keeps returning, develops yellow crust or pus, or extends outside the nappy area. Bring the products already used so the clinician can check for irritation or masking of infection.

Ask whether the rash looks bacterial, fungal, irritant or mixed; whether a swab is needed; and exactly where each prescribed cream belongs. Confirm how to clean the area and what change should prompt an earlier follow-up.