napkin rash

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napkin rash (nappy rash) (nap-kin) n. a red skin rash within the napkin area, usually caused by chemical irritation (ammoniacal dermatitis) or fungal infection with Candida. Ammoniacal dermatitis is caused by skin contact with wet soiled nappies; treatment involves exposure to air, application of barrier creams, and frequent nappy changes. Candidal nappy rash is treated with antifungal creams. Other causes of napkin rash include eczema and psoriasis.

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