Pressure Injuries: A Patient Guide to Prevention, Early Signs, and Healing

A pressure injury can start quietly, then become painful and hard to heal if it is not caught early. This guide explains what pressure injuries are, how to recognize early warning signs, what you can do at home, and when to seek expert wound care. If you or a loved one is at risk due to limited mobility, recent surgery, diabetes, poor circulation, or time spent in bed or a chair, you are not alone. With the right prevention steps and timely treatment, many pressure injuries can be prevented, and many that have started can improve.

Table of Contents

• What is a pressure injury
• Who is at risk for pressure injuries
• Where pressure injuries most commonly form
• What does a pressure injury look like early on
• Pressure injury stages explained for patients
• How to prevent pressure injuries at home
• How are pressure injuries treated
• Healing timeline, what to expect
• What NOT to do, danger zone
• When to call a wound care specialist
• FAQ, pressure injuries
• Contact and next steps

What is a pressure injury

A pressure injury is damage to the skin and sometimes the tissue underneath it that happens when an area is pressed on for too long. This pressure reduces blood flow, which means the skin does not get enough oxygen and nutrients. Over time, the tissue can become injured and break down. Pressure injuries are also commonly called bedsores or pressure ulcers. They can happen in bed, in a recliner, in a wheelchair, and even in people who move around but have areas of pressure from braces, casts, or medical devices.

Why pressure causes skin breakdown

Your skin and soft tissue need steady blood flow to stay healthy. When pressure squeezes the tiny blood vessels, tissue can be starved of oxygen. Friction and shear, which is when the skin slides while deeper tissue stays in place, make the damage worse.

Key terms in simple language

• Pressure means constant weight on one spot.
• Shear means the skin and tissue get pulled in different directions, often from sliding down in bed.
• Friction means rubbing, like heels dragging on sheets.
• Moisture means sweat or urine or stool on the skin that weakens the barrier.

Quick self check

• Is the person spending long hours in one position.
• Is the skin damp from sweat or incontinence.
• Is there redness that does not go away after pressure is removed.
• Is there pain or burning over a bony area.

Who is at risk for pressure injuries

Anyone can develop a pressure injury, but risk increases when movement is limited or when circulation and nutrition are not strong enough to support healthy skin. Knowing the risk factors helps you prevent problems before the skin breaks down.

Common risk factors

• Limited mobility, including bed bound or wheelchair use.
• Recent surgery, sedation, or recovery that reduces movement.
• Older age, thinner skin, and reduced sensation.
• Diabetes, poor circulation, or peripheral artery disease.
• Incontinence or frequent moisture on the skin.
• Low protein intake, dehydration, or unplanned weight loss.
• Loss of sensation, such as neuropathy or spinal cord injury.
• Medical devices that press on skin, including oxygen tubing, braces, casts, or catheters.

Why risk goes up in chronic illness

Chronic conditions can reduce blood flow and the body’s ability to repair tissue. People may also eat less, move less, and have more fragile skin. That combination makes pressure injuries more likely and can slow healing.

Checklist, who should do prevention steps every day

• Anyone who cannot reposition independently.
• Anyone who sits for long periods without standing breaks.
• Anyone with diabetes and reduced foot sensation.
• Anyone with recent hospitalization or skilled nursing stay.

Where pressure injuries most commonly form

Pressure injuries usually form over bony areas because there is less padding, so pressure is concentrated. The exact location depends on whether a person spends more time in bed, in a chair, or on one side.

Common locations for people in bed

• Tailbone and buttocks.
• Heels and ankles.
• Hips.
• Shoulder blades and spine.
• Back of the head and ears.

Common locations for people in a chair or wheelchair

• Sitting bones, buttocks, and tailbone.
• Back of thighs.
• Shoulder blades.
• Spine.
• Feet and heels if they rest against foot plates.

Device related pressure points

• Behind ears from oxygen tubing.
• Bridge of nose from masks.
• Under braces, splints, casts, or compression wraps.
• Under catheter tubing or securement devices.

Daily skin check tip

Use good lighting. Check bony points once a day. If a person cannot feel pain well, visual checks matter even more.

What does a pressure injury look like early on

The earliest signs are often subtle. Catching a pressure injury at the first stage can prevent a deeper wound. The key early clue is skin that looks different and does not quickly return to normal after pressure is relieved.

Early warning signs to look for

• Redness that does not fade within 30 minutes after changing position.
• Skin that feels warmer or cooler than nearby skin.
• Swelling, firmness, or a spongy feel.
• Pain, tenderness, burning, or itching in a specific spot.
• Color changes, including purple, maroon, or darker areas in deeper skin tones.
• Blistering or a small open spot.

How to do a simple blanch test

In lighter skin tones, gently press a finger on a red area for a few seconds. If it turns white then returns to normal, that may be a temporary pressure mark. If it stays red and does not blanch, it may be a stage 1 pressure injury. In darker skin tones, blanching can be harder to see. Instead focus on temperature changes, swelling, pain, and skin that looks shiny or different in color compared to surrounding areas.

Warning, do not ignore these signs

• Deep purple or maroon discoloration.
• Rapidly worsening pain.
• Skin that becomes hard, boggy, or numb.

Pressure injury stages explained for patients

Pressure injuries are staged based on how deep the damage is. Staging helps guide treatment. Not every wound fits neatly into a stage, and some injuries start deep below the skin before the surface changes.

Stage 1, skin is intact but damaged

Stage 1 means the skin is not open, but it shows injury. This often looks like persistent redness, or a darkened area, with pain, heat, or firmness.

Stage 1 checklist

• Skin is not broken.
• Redness does not fade after pressure relief.
• Area may hurt or feel warm.
• Action needed, offload pressure and protect skin.

Stage 2, partial thickness skin loss

Stage 2 means the top layers of skin are damaged. You may see a shallow open sore, a blister, or a pink red wound bed.

Stage 2 checklist

• Shallow open area or blister.
• May be painful.
• Needs gentle wound care and pressure relief.

Stage 3, full thickness skin loss

Stage 3 means the wound goes through the full skin thickness and may extend into fatty tissue. You may see depth, drainage, or undermining, which is when the wound extends under the skin edges.

Stage 3 checklist

• Deeper crater like wound.
• May have yellow tissue or drainage.
• Often needs professional wound care and possibly debridement.

Stage 4, full thickness skin and tissue loss

Stage 4 means the damage is very deep and can involve muscle, tendon, or bone. These wounds carry higher risk for infection and complications.

Stage 4 checklist

• Very deep wound.
• May show tendon or bone.
• High infection risk, urgent specialist care needed.

Unstageable, depth is hidden

Sometimes the wound is covered by dead tissue like slough or eschar, so the true depth cannot be seen. That is called unstageable until it is evaluated and safely cleaned.

Deep tissue pressure injury, damage under the skin

This can look like a dark purple or maroon area, sometimes with a blood filled blister. The skin may be intact at first, but the tissue underneath is injured. This needs quick offloading and medical evaluation.

When staging should be done by a clinician

• If the wound is deeper than a shallow scrape.
• If there is black tissue, thick yellow tissue, or a bad odor.
• If the person has diabetes, poor circulation, or fever.

How to prevent pressure injuries at home

Prevention works best when it is routine. The goal is to reduce pressure, protect skin, and support the body with hydration and nutrition. Even small changes, done consistently, can make a major difference.

Repositioning and offloading

Changing position reduces pressure and restores blood flow. The right schedule depends on mobility and risk level.

Repositioning checklist

• In bed, change position at least every 2 hours, or as directed by your care team.
• In a chair, shift weight every 15 to 30 minutes if possible.
• Use pillows to keep bony areas from rubbing, especially knees and ankles.
• Float the heels, keep them off the bed surface using pillows under the calves.
• Avoid lying directly on the hip bone for long periods.

Skin care and moisture control

Clean, dry, protected skin is more resilient. Too much moisture weakens the skin barrier and increases breakdown risk.

Skin protection checklist

• Clean skin gently with mild cleanser, avoid harsh scrubbing.
• Pat dry, do not rub.
• Moisturize dry skin daily to prevent cracking.
• Use a barrier cream for incontinence areas.
• Change wet clothing or bedding quickly.

Nutrition and hydration for skin strength

Your body needs protein, calories, vitamins, and fluids to maintain skin and repair damage. Poor appetite is common with illness, but small improvements can support healing.

Nutrition support checklist

• Aim for protein with each meal if allowed by your medical plan.
• Drink fluids regularly unless you have a restriction.
• Ask your clinician if nutrition supplements are appropriate.
• Monitor unplanned weight loss, it increases risk.

Support surfaces and cushions

Special mattresses, overlays, and cushions help spread pressure more evenly. These can be important for high risk patients.

Support surface checklist

• Use a pressure reducing mattress or overlay if recommended.
• Use a wheelchair cushion designed for pressure relief.
• Avoid donut cushions, they can increase pressure at the edges.
• Keep sheets smooth to reduce friction.

Warning signs that prevention needs to be upgraded

• Persistent redness or darkening despite repositioning.
• New pain or burning over bony areas.
• Blistering or open skin.

How are pressure injuries treated

Treatment depends on the stage, the location, the amount of drainage, infection risk, and overall health factors like circulation and nutrition. The most important foundation is pressure relief, without offloading, healing is limited.

Step one, remove pressure from the area

Offloading protects the wound and helps blood flow return. This may include turning schedules, special cushions, heel protection, and device adjustments.

Cleaning and dressing the wound

Most pressure injuries need gentle cleansing and dressings that keep the right moisture balance. Too dry can slow healing, too wet can damage surrounding skin.

Dressing goals

• Protect the wound from germs.
• Maintain a moist healing environment.
• Absorb extra drainage.
• Protect surrounding skin.

Debridement when needed

If dead tissue is present, a clinician may recommend debridement, which is removal of non healthy tissue so healing tissue can grow. Debridement can be done in different ways depending on the wound and patient comfort.

Infection control and biofilm management

Some wounds become colonized with bacteria or develop a biofilm, which is a protective layer that makes germs harder to remove. Your care team may use topical therapies and proper cleansing to reduce bacterial load.

Signs infection may be present

• Increasing redness, warmth, swelling.
• Worsening pain.
• Bad odor that persists after cleansing.
• Thick drainage, especially yellow, green, or cloudy.
• Fever or feeling unwell.

Advanced therapies your wound team may consider

For deeper, slow healing wounds, specialized clinics may offer advanced technologies and therapies designed to support tissue repair and reduce complications.

Examples of advanced options

• Negative pressure wound therapy, which may help remove fluid and support tissue growth.
• Targeted oxygen therapies that support wound oxygen levels.
• Selective tissue removal tools that can improve wound bed quality.
• Imaging tools that assess tissue oxygenation to guide care.

Warning, do not self treat deeper wounds without guidance

If a pressure injury is open, deep, draining heavily, or has black tissue, it should be evaluated by a wound care professional. Home care without a plan can make the wound worse.

Healing timeline, what to expect

Healing time varies widely. A mild stage 1 injury can improve in days when pressure is removed. Deeper wounds may take weeks to months, especially if circulation is poor or infection is present. A clear plan and consistent care matter more than perfect speed.

Typical timeline style guide

• First 24 to 72 hours Reduction in redness and pain is a good sign when pressure is relieved, especially for stage 1.
• Week 1 Stage 2 wounds may start to shrink and look healthier with proper dressing and offloading.
• Weeks 2 to 6 Many stage 2 wounds can significantly improve. Stage 3 wounds may show granulation tissue, which is healthy red tissue, and gradual filling in.
• Months 2 to 6 Stage 3 and 4 wounds often require long term care, infection control, and sometimes advanced therapies.

What progress looks like

Improvement often shows up as less pain, less odor, healthier tissue, and gradual size reduction. Some days will look the same, that does not always mean failure. The overall trend matters.

Checklist, signs you are moving in the right direction

• Redness is fading, or dark area is not expanding.
• Drainage is stable or decreasing.
• Wound edges look healthier, not more broken down.
• Pain is improving.

Warning, signs healing is not on track

• Wound is getting larger or deeper.
• New black tissue or rapidly increasing drainage.
• Spreading redness, fever, chills.
• New strong odor.

What NOT to do, danger zone

Some well intended actions can worsen a pressure injury or delay healing. If you are unsure, contact a wound care team before trying a new product or technique.

Danger, avoid these common mistakes

• Do not massage red or darkened skin over a bony area, this can increase tissue damage.
• Do not use hydrogen peroxide, iodine, or alcohol on an open wound unless specifically instructed, these can irritate healing tissue.
• Do not leave an open wound uncovered unless directed, many wounds heal better with appropriate dressings.
• Do not use donut cushions, they can increase pressure and reduce blood flow.
• Do not ignore device pressure, adjust tubing, braces, and straps if they are pressing on skin.
• Do not keep the head of bed too high for long periods if sliding occurs, this increases shear at the tailbone.
• Do not wait weeks to seek care for a worsening wound, earlier care often leads to better outcomes.

Urgent warning signs

• Fever, confusion, weakness, or rapid heart rate.
• Rapidly spreading redness or severe pain.
• Black tissue, exposed bone, or heavy foul drainage.

When to call a wound care specialist

It is wise to get help early. A specialist can confirm the stage, identify contributing causes like pressure points or poor circulation, and create a clear care plan. This often prevents small problems from becoming major wounds.

Call for evaluation if any of these apply

• Redness or discoloration does not improve within 24 to 48 hours after pressure relief.
• There is a blister or open wound.
• The wound is on the heel, tailbone, or another high risk location.
• The person has diabetes, poor circulation, kidney disease, or is immunocompromised.
• There are signs of infection, increasing pain, odor, or drainage.
• The wound is getting larger, deeper, or not improving within 2 weeks.

What a specialist visit may include

• Full skin and wound assessment.
• Review of mobility, nutrition, and medical history.
• Offloading and repositioning plan.
• Dressing selection and caregiver education.
• Advanced treatment recommendations when appropriate.

How to reference contact in this article

If you want to schedule help, use the contact section here: Contact and next steps.

FAQ, pressure injuries

Can a pressure injury heal on its own

Some early stage pressure injuries can improve quickly when pressure is removed and the skin is protected. Open or deeper wounds should be evaluated so the right plan is in place.

How fast can a stage 1 pressure injury improve

Stage 1 injuries may improve in a few days if pressure is consistently relieved and the skin is kept clean, dry, and protected.

What is the biggest cause of pressure injuries

The most common cause is prolonged pressure on the same area, especially over bony points, combined with limited movement.

Are pressure injuries contagious

No. Pressure injuries are not contagious. They are caused by pressure and reduced blood flow, not by spreading from person to person.

Should I cover a pressure injury with a bandage

If the skin is open, covering it with an appropriate dressing is often helpful, but the best choice depends on the wound. Avoid random products and ask a wound professional if you are unsure.

What sleeping position helps prevent pressure injuries

Changing positions regularly is key. Many people benefit from side positioning with pillows, and from floating the heels so they are not pressed into the mattress.

When is a pressure injury an emergency

If there are signs of infection, fever, rapidly worsening pain, black tissue, exposed bone, or spreading redness, seek medical care promptly.

Can pressure injuries happen in a wheelchair

Yes. Sitting puts pressure on the tailbone and buttocks. Weight shifting and a pressure relief cushion help reduce risk.

Contact and next steps

If you are concerned about a pressure injury, or you want help preventing one, professional evaluation can save time, reduce pain, and prevent complications. The WISH Clinic provides compassionate, patient centered wound care with advanced tools and therapies tailored to each person.

• If you have persistent redness, blistering, or an open wound, schedule an evaluation.
• If the wound is worsening, painful, draining, or has odor, do not delay care.
• If you are caring for someone with limited mobility, ask about prevention planning and support surfaces.