Preventing skin breakdown starts with reducing pressure, keeping skin clean and dry, and ensuring adequate nutrition. Skin can begin to break down in as little as one to two hours when sustained pressure cuts off blood flow to tissue, so consistent, proactive care is essential. Whether you’re caring for someone who is bedridden, uses a wheelchair, or is recovering from surgery, the strategies below can dramatically reduce the risk of pressure injuries.
Why Skin Breaks Down
Skin breakdown happens when external force, usually pressure combined with friction or shearing, compresses the tiny blood vessels that feed your skin and the tissue beneath it. Tissues can only tolerate pressure on the arterial side of about 30 to 32 mmHg for a short time. When pressure exceeds that threshold, blood can no longer pass through, oxygen and nutrients stop arriving, and metabolic waste builds up. If that ischemia persists for one to two hours, cells begin to die.
Shearing forces are particularly damaging. Shearing occurs when the skin stays in place while underlying tissue slides, such as when someone slowly slides down in a bed or chair. This bends and stretches blood vessels, cutting off flow even more easily than direct compression. Think of it like kinking a garden hose versus pinching it: the kink stops flow with less effort. Friction compounds the problem by weakening skin that’s already oxygen-starved from pressure, accelerating breakdown.
Who Is Most at Risk
Hospital-acquired pressure injuries affect an estimated 12% of hospital inpatients worldwide, with rates as high as 40% in some U.S. hospitals. In intensive care units, prevalence climbs to about 16%. But pressure injuries don’t only happen in hospitals. Anyone with limited mobility, reduced sensation, poor nutrition, or chronic moisture exposure on the skin is at risk.
Healthcare providers often use the Braden Scale to assess risk. It scores six factors: sensory perception (can the person feel discomfort from pressure?), physical activity level, mobility, moisture exposure, nutritional status, and friction or shear exposure. Scores range from 6 to 23, with lower numbers meaning higher risk. Even without a formal assessment, you can use those same six categories as a mental checklist. If someone you’re caring for scores poorly in several of those areas, prevention efforts need to be aggressive and consistent.
Repositioning: The Single Most Important Step
Regular repositioning is the cornerstone of prevention. The widely accepted guideline is to turn a bedridden person every two hours on a standard mattress. If the person is on a pressure-redistribution mattress, turning every four hours may be sufficient. Research has shown that four-hour turning on a quality mattress can be as effective as, or even slightly better than, two-hour turning on a standard surface, likely because the person is disturbed less and stays in position longer.
When repositioning, use a 30-degree side-lying tilt rather than a full 90-degree turn onto the hip. The full side-lying position concentrates pressure directly over the hip bone, one of the most vulnerable spots on the body. A gentle tilt spreads the load across a broader area of the buttock and thigh. Alternate between left tilt, back, and right tilt in a consistent rotation.
For someone who sits in a wheelchair or recliner, weight shifts should happen every 15 to 30 minutes. This can mean leaning side to side, tilting forward, or using a power tilt function if the chair has one. Sitting creates intense, focused pressure on the tailbone and sitting bones, and even short periods without relief can start the cascade toward tissue damage.
Choosing the Right Support Surface
The mattress or cushion a person rests on makes a significant difference. Support surfaces fall into two broad categories: constant low-pressure surfaces and alternating pressure surfaces. Constant low-pressure options include high-specification foam, gel, and water-based mattresses. These work by spreading the person’s weight over a larger contact area so no single spot bears too much load.
Alternating pressure mattresses go a step further. They use electrically powered air cells that inflate and deflate in cycles, changing which parts of the body bear weight over time. This reduces both the intensity and the duration of pressure at any given point. For people at moderate to high risk, alternating pressure mattresses are commonly recommended, though high-quality foam mattresses have performed comparably in some clinical trials.
Whatever surface you choose, it should be appropriate to the person’s weight and risk level. A thin overlay on a worn-out hospital mattress won’t do much. And no mattress eliminates the need for repositioning; it simply extends the safe interval between turns.
Protecting the Heels
Heels are uniquely vulnerable because they have very little padding over the bone. The standard approach is “floating” the heels, which means lifting them completely off the bed surface so no pressure contacts the back of the foot at all. You can do this by placing a pillow lengthwise under the lower legs so the heels hang freely in the air. Specialized offloading boots are also available and work on the same principle, suspending the heel while cradling the leg.
The key is that the heel must bear zero pressure. Even a small amount of contact over several hours can cause breakdown in this area, especially in people with diabetes or poor circulation. Check that pillows haven’t shifted and that the person’s legs haven’t slid down to where the heels touch the mattress again.
Managing Moisture on the Skin
Wet skin is weaker skin. Prolonged exposure to urine, stool, or sweat softens the outer layer of skin and makes it far more susceptible to friction and pressure damage. Incontinence is one of the strongest risk factors for skin breakdown, especially in the buttock and groin area.
Clean the skin gently after each episode of incontinence using a pH-balanced cleanser rather than soap and water, which can strip protective oils. After cleaning, apply a moisture barrier product. The most effective barrier creams typically contain dimethicone (a silicone-based ingredient that forms a breathable protective film) or zinc-based compounds that physically shield the skin from moisture. Apply these to intact skin as a preventive measure, not just after redness appears.
Beyond incontinence care, keep bedding dry and smooth. Wrinkled sheets create pressure ridges, and damp fabric increases friction against the skin. Low humidity and low temperatures also decrease the skin’s natural barrier function and increase vulnerability to mechanical stress, so keep the room comfortably warm and not overly dry.
Nutrition That Supports Skin Integrity
Skin needs adequate calories and protein to maintain itself and repair minor damage before it progresses. For someone at risk of skin breakdown, the general target is 30 to 35 calories per kilogram of body weight per day, with 1.25 to 1.5 grams of protein per kilogram per day. For a 150-pound person, that translates to roughly 2,000 to 2,400 calories and 85 to 100 grams of protein daily.
During periods of acute illness or physiological stress, the body’s metabolism shifts. Energy needs may actually decrease slightly (closer to 20 calories per kilogram), but protein needs remain high because the body breaks down its own muscle and tissue during stress. Providing enough protein helps maintain a positive nitrogen balance, which is the metabolic state needed for tissue repair. Good sources include eggs, dairy, poultry, fish, beans, and protein supplements when appetite is poor.
Hydration matters too. Dehydrated skin loses elasticity and tears more easily. If the person you’re caring for doesn’t drink much on their own, offer fluids frequently in small amounts throughout the day.
Recognizing Early Warning Signs
The earliest sign of skin breakdown is a localized area of redness that doesn’t fade when you press on it, typically over a bony prominence like the tailbone, hip, heel, or ankle. This is a Stage 1 pressure injury, and the skin is still intact. On darker skin tones, this may appear purplish or maroon rather than red, so look for any area that differs in color or temperature from the surrounding skin.
If you spot nonblanchable redness, that area has already experienced enough pressure to damage the tissue beneath. Immediately relieve all pressure from that spot and examine your current prevention routine. Are turns happening often enough? Is the mattress adequate? Is the skin staying too moist? Stage 1 injuries are reversible with prompt intervention, but they can progress to open wounds involving deeper tissue layers surprisingly fast if the cause isn’t addressed.
Do daily skin checks on anyone at risk, paying special attention to the sacrum, heels, hips, shoulder blades, and the backs of the ears in people who use oxygen tubing. Catch it at redness, and you can usually reverse it. Miss it, and the damage can extend down to muscle and bone.
Reducing Friction and Shear
Small changes in how you move someone can prevent a lot of damage. Never drag a person across the sheets. Use a draw sheet or slide board to lift and reposition. When raising the head of the bed, keep it at 30 degrees or less when possible, because steeper angles cause the body to slide downward, creating shearing forces on the sacrum and tailbone.
Lightweight, breathable fabrics reduce friction against the skin. Some facilities use silk-like or low-friction sheets and pillowcases for high-risk patients. Elbow and heel protectors made of sheepskin or foam can also reduce friction at common pressure points, though they don’t replace the need for repositioning or proper support surfaces.