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Author: Dr Hilary Brown, General Practitioner, Newcastle Skin Check, Newcastle, NSW, Australia. DermNet NZ Editor in Chief: Adjunct A/Prof. Amanda Oakley, Dermatologist, Hamilton, New Zealand. Copy edited by Gus Mitchell. September 2019.
Incontinence-associated dermatitis is a form of irritant contact dermatitis due to contact with urine and faeces in people who are incontinent of urine or faeces or both (dual incontinence).
Incontinence-associated dermatitis can affect anyone with incontinence of urine, faeces or both. The reported prevalence varies from 5.6% to 50% with incidence rates between 3.4% and 25%, depending on the setting and population studied . Approximately one-third of patients with faecal incontinence develops incontinence-associated dermatitis .
Incontinence-associated dermatitis is due to a combination of chemical and physical irritation of the skin. The presence of urine and faeces causes a rise in pH, which increases the permeability of the skin, affecting barrier function as well as increasing the risk of infection. Friction to the skin causes a physical irritation, which results in weakened skin .
The clinical findings in incontinence-associated dermatitis are circumscribed redness and swelling of the convexities of genital and anal skin and, in some cases, erosions and blisters (bullae). Depending on position, the distribution of dermatitis can be symmetrical or nonsymmetrical.
The surrounding skin may have a wet, macerated appearance in the acute phase and dryness and peeling skin in the chronic phase. Dermatitis may spread to involve the skin folds and in some cases, skin that is not directly in contact with urine and faeces but these areas are always less severely affected.
Incontinence-associated dermatitis can cause considerable irritation and discomfort. It can be emotionally upsetting for the patient and caregivers.
There is also an increased risk of partial and full-thickness pressure ulceration.
Incontinence-associated dermatitis is a clinical diagnosis based on the physical examination findings in people with urine or faecal incontinence.
Incontinence-associated dermatitis should be distinguished from:
The management of incontinence should also be considered and any treatable causes should be addressed.
Treatment of established incontinence-associated dermatitis includes:
There are many over-the-counter preparations for cleansing, moisturising and protecting the skin, but there is not enough evidence to recommend one product over another .
Established incontinence-associated dermatitis is difficult to treat and can often recur. Good skincare and management of the incontinence and any associated infection or pressure sores can result in clearance of dermatitis or reduction in its severity.
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