What bedsores are and why they form

A bedsore (also called a pressure ulcer or pressure injury) is damage to your skin and the tissue underneath it, caused by prolonged pressure on one spot. When you stay in one position for hours without moving — whether lying in bed, sitting in a wheelchair, or resting on a cast — the weight of your body cuts off blood flow to that area. Without oxygen and nutrients, the skin dies.

Bedsores most often form on bony parts of your body: your tailbone, hips, heels, elbows, and the back of your head. They can develop in as little as two to three hours of continuous pressure, though they usually take longer. The longer you go without moving, the deeper the damage goes.

Anyone can get a bedsore, but your risk is higher if you cannot move on your own, if you use a wheelchair or spend most of your time in bed, if you have poor nutrition, or if you have diabetes or circulation problems. Older adults and people with spinal cord injuries are at particular risk.

Key Takeaways

  • Bedsores form in stages, from redness that blanches (turns white when pressed) to deep wounds involving muscle and bone, and earlier stages are far easier to treat.
  • The first step in treatment is removing pressure from the affected area by changing position every two hours, using special cushions or mattresses, and keeping weight off the sore.
  • Keeping the wound clean and moist (not wet) with the right dressing is essential; different stages need different types of dressings, and your doctor or nurse can recommend which one.
  • Nutrition matters: eating enough protein and staying hydrated help your body heal, and a doctor can refer you to a dietitian if you are struggling to eat enough.
  • Deep bedsores may need surgery or specialized wound care from a nurse or wound specialist, and waiting too long can make treatment much harder and longer.

Recognizing bedsores at each stage

Bedsores progress through four stages, and catching them early makes a huge difference in how quickly they heal. Stage 1 is redness on the skin that does not go away after 30 minutes of pressure relief. If you press on it with your finger, the redness should turn white (blanch) and then return to red when you let go. The skin is not broken.

Stage 2 means the outer layer of skin is damaged or missing. You may see a blister, a shallow open sore, or skin that looks scraped. The area around it may be red or discolored. It is painful and may leak fluid, but the damage does not go deeper than the top layers of skin.

Stage 3 involves a deep crater or hole in the skin. The damage extends through all the skin layers into the tissue underneath (called subcutaneous tissue). You may see yellowish or blackish dead tissue at the bottom of the wound. This stage requires medical attention.

Stage 4 is the most serious: the wound goes through all skin layers and into muscle, bone, or other deep structures. There is often dark, dead tissue, and the wound may be large and deep. This stage always requires professional medical care and may need surgery.

Relieving pressure as the foundation of treatment

Nothing heals a bedsore if pressure continues. Your first action is to stop putting weight on that spot. If the sore is on your tailbone or hip, you need to change position at least every two hours — more often is better. If you cannot move on your own, a caregiver needs to help you shift your weight.

Use pressure-relieving devices to distribute your weight more evenly. A foam or gel cushion under your buttocks or heels can help. If you spend most of your time in bed, ask your doctor about a pressure-relieving mattress — these come in several types, including air mattresses that adjust pressure automatically and foam mattresses designed to reduce pressure points. Some are covered by insurance if your doctor writes an order for one.

Keep the area clean and dry. Moisture from sweat or incontinence breaks down skin and makes bedsores worse. Change bedding and clothing if they get damp, and use a barrier cream on skin that is at high risk. If you use adult incontinence products, change them promptly.

Avoid massaging the reddened area or the skin around it. Massage can damage tissue that is already fragile and make the bedsore worse.

Cleaning and dressing the wound

How you clean and cover a bedsore depends on what stage it is and what your doctor or nurse recommends. For stage 1 sores, gentle cleaning with mild soap and water is usually enough. Keep the skin moisturized with lotion, but do not use products with alcohol or fragrance, which can irritate it.

Stage 2 and deeper sores need proper wound care. Clean the wound gently with saline solution (salt water) or tap water — your nurse can show you how. Do not use hydrogen peroxide or iodine, which can damage healing tissue. Pat the area dry gently with a clean cloth.

The right wound dressing keeps the wound moist (not wet) and protects it from bacteria. Different dressings work for different situations: hydrogel dressings keep wounds moist and are good for dry wounds; foam dressings absorb fluid and work well for wounds that are draining; transparent film dressings let you see the wound and protect it from bacteria. Your doctor, nurse, or wound specialist will recommend which type based on what they see.

Change the dressing as often as your healthcare provider directs — usually once or twice a day, or whenever it becomes soiled or wet. Wash your hands before and after, and use clean supplies each time.

Nutrition and hydration for healing

Your body cannot repair a bedsore without the right fuel. Protein is especially important: it builds new tissue and strengthens skin. Aim for protein at each meal — chicken, fish, eggs, beans, yogurt, or milk all work. If you have trouble eating solid food, protein shakes or smoothies can help.

Vitamin C and zinc also play a role in wound healing. Citrus fruits, berries, tomatoes, and leafy greens are good sources of vitamin C. Meat, shellfish, nuts, and seeds contain zinc. If you are not eating enough of these foods, tell your doctor — a dietitian can suggest options that work for you.

Drink enough water and other fluids. Dehydration slows healing and makes your skin more fragile. Most people need at least six to eight glasses of water a day, though your doctor may recommend more or less depending on your health.

If you have lost your appetite, feel full quickly, or have trouble swallowing, tell your healthcare provider. These are signs that nutrition support may help, and there are options available.

When to see a doctor or wound specialist

See a doctor right away if you notice signs of infection: increased warmth, redness, swelling, pus, a foul smell, or fever. Infection can spread quickly and become serious. Your doctor may prescribe antibiotics or recommend a wound culture to identify what is causing the infection.

Stage 3 and stage 4 bedsores should be seen by a doctor or nurse. These wounds often need specialized care that goes beyond home treatment. A wound care specialist or wound nurse can assess the damage, recommend the right dressings and treatments, and monitor healing over time. Some wounds need debridement — removal of dead tissue — which a healthcare provider must do.

Deep bedsores that do not improve with wound care after several weeks, or that are very large, may need surgery. A surgeon can remove dead tissue and sometimes close the wound with a skin graft or flap (moving healthy skin from another part of your body to cover the wound). This is usually a last resort, but it can be necessary for stage 4 sores.

If you are in a hospital or nursing home, staff should be checking your skin regularly for signs of bedsores. If you are at home and caring for yourself or a family member, check the high-risk areas (tailbone, hips, heels, elbows, back of head) every day.

Preventing bedsores in the first place

Prevention is far easier than treatment. If you are at risk — because you are bedridden, use a wheelchair, or have limited mobility — the goal is to avoid sustained pressure on any one spot.

Change position at least every two hours. If you are in bed, shift from your back to your side to your other side. If you use a wheelchair, lift yourself up or shift your weight every 15 to 20 minutes. Use pillows or foam wedges to keep bony areas from touching each other or the bed.

Keep your skin clean and dry. Bathe or shower with warm (not hot) water and mild soap, and dry thoroughly. Moisturize skin that tends to be dry. Manage incontinence promptly with appropriate products and frequent changes.

Eat well and stay hydrated. Good nutrition strengthens your skin and helps your body resist breakdown. If you have diabetes or circulation problems, follow your doctor's information for managing those conditions, as they increase bedsore risk.

Use pressure-relieving devices from the start if you are at high risk. A good mattress or cushion is an investment in prevention and is often cheaper than treating a bedsore later.

Frequently Asked Questions

How long does it take for a bedsore to heal?

Stage 1 sores may heal in a few days to a week with proper pressure relief. Stage 2 sores usually take two to three weeks. Stage 3 and 4 sores can take months or longer, depending on how deep they are and whether infection develops. Healing depends heavily on whether pressure is truly relieved and whether nutrition is adequate.

Can a bedsore come back in the same spot?

Yes. Once skin has been damaged by a bedsore, that area is weaker and more vulnerable. The same spot can break down again if pressure is not managed carefully. This is why ongoing prevention — regular position changes, pressure-relieving devices, and skin checks — matters even after a sore has healed.

What if the bedsore is getting worse even with treatment?

Worsening sores often signal that pressure is not truly being relieved, that infection has developed, or that nutrition is inadequate. See your doctor to rule out infection and to reassess your pressure-relief plan. You may need a different mattress, more frequent position changes, or a referral to a wound specialist.

Are there medicines that speed up bedsore healing?

There is no pill that heals bedsores on its own. Antibiotics treat infection if present. Some topical products (applied to the skin) may help, but they work only if pressure is relieved and the wound is kept clean and properly dressed. Your doctor can recommend products based on the stage and condition of your sore.

Can I treat a bedsore at home, or do I need to go to a hospital?

Stage 1 and many stage 2 sores can be managed at home with proper pressure relief, cleaning, and dressing. Stage 3 and 4 sores usually need professional assessment and may need ongoing specialist care, though treatment can often happen at home with a visiting nurse. If infection develops or the wound is not improving, hospital care may be needed.