Perineal dermatitis, recently relabelled 'incontinence-associated dermatitis' (IAD), is an inflammation of the skin that occurs when urine and/or stool comes into contact with the skin. It can range in severity from erythema with or without loss of skin integrity to infection. IAD affects as many as 41% of adults in long-term care; it is costly, painful and, for the most part, preventable. An effective plan of care for individuals with IAD must include assessment and management of incontinence aetiology, perineal skin and risk assessment, gentle cleansing and moisturization, application of skin barriers and treatment of secondary infection, and the use of containment devices if indicated.