This article was reviewed by Tara Call Triplett, RN, WCC, CHFN

What is a MASD wound?

Moisture-Associated Skin Damage (MASD) refers to inflammation and skin erosion caused by prolonged exposure to moisture such as urine, stool, wound exudate, perspiration, or other bodily fluids. Unlike pressure injuries, which are caused by unrelieved pressure or shear and friction forces, MASD results from the chemical and physical effects of moisture that breaks down the skin barrier. The skin becomes overhydrated, fragile, and more susceptible to friction and secondary infections.

Signs, symptoms, and characteristics of MASD wounds

Clinically, MASD wounds typically present as diffuse, irregular areas of erythema, erosion, and maceration. The skin may appear bright red, soggy, or denuded, with patients often reporting pain, burning, or itching. The damage is usually superficial, affecting the epidermis and sometimes the upper dermis, rather than deeper tissue layers. Unlike pressure ulcers, MASD wounds do not follow predictable staging patterns, and their edges are often indistinct or irregularly shaped.

Common causes of MASD wounds

MASD wounds can develop in a variety of ways, most often due to prolonged exposure to bodily fluids. Common examples include:

Incontinence-Associated Dermatitis (IAD): Caused by exposure to urine and/or stool.
Intertriginous Dermatitis (Intertrigo): Occurs in skin folds due to trapped perspiration and friction.
Periwound MASD: Skin breakdown caused by excessive exudate leaking from chronic wounds.
Peristomal MASD: Damage around a stoma site due to leakage of effluent.

Each type shares the common mechanism of moisture imbalance, which weakens the skin barrier and predisposes the patient to further injury.

How to care for a MASD wound

As a wound care nurse, MASD management involves three primary goals: moisture control, skin protection, and prevention of further injury. The first step is to identify and address the source of excess moisture, such as managing incontinence or optimizing wound exudate using appropriate dressings. Gentle cleansing with a pH-balanced cleanser is essential to avoid further irritation. Barrier creams, moisture barriers, and protective dressings can shield the skin from continued exposure. For periwound MASD, absorbent dressings that manage exudate are essential, while for incontinence-associated dermatitis, structured skin care protocols with barrier ointments and timely brief changes are critical.

Education also plays a role. Teaching patients and caregivers about skin hygiene, incontinence management, and repositioning techniques helps prevent recurrence.

MASD wounds vs. pressure ulcers: How to tell the difference

Differentiating MASD wounds from pressure injuries is critical for accurate documentation and appropriate care. MASD wounds result from prolonged moisture exposure rather than pressure or shear forces. They tend to appear in diffuse, irregular patterns, often over areas that have been repeatedly exposed to fluids or within skin folds where perspiration and friction accumulate. Unlike pressure injuries, MASD wounds are not classified by stage because it does not involve deep tissue necrosis. Instead, the damage is usually superficial, affecting the epidermis or extending only into the upper dermis. The edges are often irregular and poorly defined, and the tissue may appear bright red, macerated, or denuded. Patients may describe sensations of burning, itching, or pain, which can further guide clinical assessment.

By contrast, pressure injuries are typically found over bony prominences, have more sharply demarcated edges, and are staged according to the depth of tissue loss. They are directly linked to unrelieved pressure or shear/friction forces compromising blood flow. Understanding these distinctions is vital because misclassifying MASD as a pressure injury can lead to inappropriate interventions, incorrect reporting, and delays in proper treatment. For wound care nurses, recognizing the subtle but important differences ensures patients receive targeted management strategies, appropriate preventive measures, and accurate documentation within care plans and quality reporting systems.

What stage of wound is an MASD wound?

MASD wounds are not classified under the staging system used for pressure injuries. They are typically considered partial-thickness wounds, involving the epidermis and possibly the superficial dermis, but not extending into deeper tissues. Partial-thickness wounds are characterized by shallow open areas with a red or pink wound bed, often moist and sometimes accompanied by blistering. Because they do not extend into subcutaneous tissue, they tend to heal more readily with proper moisture balance and protection. These wounds still require careful monitoring, as excess moisture or secondary infection can slow healing. For documentation, MASD should be described by etiology (e.g., incontinence-associated dermatitis, peri wound MASD) rather than staged like pressure ulcers.