Bedsores (Pressure Ulcers) - Symptoms, Causes & Treatment
By ScanSkinAI Editorial Team✓ Reviewed for medical safetyLast updated June 2026
Injuries to skin and underlying tissue resulting from prolonged pressure on the skin. They most commonly develop on skin that covers bony areas of the body, such as heels, ankles, hips, and tailbone. People most at risk are those with medical conditions that limit their ability to change positions.
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Quick Answer
Bedsores, also known as pressure ulcers, are skin and tissue injuries caused by prolonged pressure, most often on bony areas like the heels, ankles, hips, and tailbone. They frequently affect people who are bedridden, use a wheelchair, or have limited mobility. Early signs include unusual changes in skin color, swelling, and tender areas that do not turn pale when pressed. Prevention through frequent repositioning is much more effective than treatment. If you notice early signs of skin breakdown, seek medical advice promptly to prevent the wound from worsening.
Clinical Context
Pressure ulcers affect approximately 2.5 million patients annually in the US alone. They are staged I-IV based on depth: Stage I shows intact skin with non-blanchable redness; Stage II involves partial-thickness skin loss; Stage III shows full-thickness skin loss; Stage IV extends to muscle or bone. Unstageable ulcers have obscured depth. Prevention is far more effective than treatment, making repositioning and pressure redistribution critical.
Symptoms
- Unusual changes in skin color or texture
- Swelling
- Pus-like draining
- Tender areas
- Skin that feels cooler or warmer than other areas
- Non-blanchable redness in early stages
Severity & Progression
Causes & Risk Factors
- Prolonged pressure on skin
- Friction from skin rubbing
- Shear forces
- Moisture
- Poor nutrition
- Reduced blood flow
Treatment & Management
Treatment depends on stage and involves a multidisciplinary approach. Pressure relief is essential - specialized mattresses and frequent repositioning every 2 hours. Wound care includes cleaning, debridement of dead tissue, and appropriate dressings (hydrocolloids, foams, alginates). Negative pressure wound therapy accelerates healing in stages III-IV. Nutrition optimization with adequate protein and vitamin C supports healing. Surgery may be needed for severe cases.
- Relieving pressure with repositioning and special mattresses
- Wound cleaning and appropriate dressings
- Debridement of dead tissue
- Pain management
- Antibiotics if infected
- Negative pressure wound therapy
- Nutritional optimization
- Surgery for severe cases
Red Flags & Complications
Seek medical attention if you experience any of the following:
- Cellulitis and deep tissue infection
- Sepsis from infected wounds
- Osteomyelitis (bone infection)
- Delayed healing requiring months of care
- Need for reconstructive surgery
Self-Care Tips
- Reposition every 2 hours if bedridden
- Use pressure-relieving mattresses and cushions
- Keep skin clean and dry
- Maintain adequate nutrition and hydration
- Inspect skin daily, especially over bony areas
When to See a Doctor
If you notice signs of a pressure ulcer, especially if there's broken skin, signs of infection (fever, increased pain, foul odor), or if ulcer is progressing
Frequently Asked Questions
What do early bedsores look and feel like?
In the earliest stage, you might notice an area of skin that looks unusually red or discolored and does not turn pale when you press a finger against it. The area may feel warmer or cooler than the surrounding skin, and it could be tender, painful, or firm. Catching these signs early is crucial because the skin is still intact, making it much easier to heal by simply relieving the pressure.
Why do some people get pressure sores so quickly?
Pressure sores develop when constant pressure cuts off blood flow to the skin, causing tissue damage. People who are bedridden, paralyzed, or use wheelchairs are at the highest risk because they cannot easily shift their weight. Other major factors that speed up skin breakdown include excessive moisture from sweat or incontinence, poor nutrition, dehydration, and medical conditions like diabetes that affect circulation.
What is the best way to prevent a pressure ulcer from forming?
The most effective prevention is relieving pressure by changing positions frequently—typically every two hours for someone in bed, or every fifteen minutes for someone in a wheelchair. Using specialized supportive mattresses and cushions also redistributes weight. Keeping the skin clean and dry, managing moisture, and ensuring a protein-rich diet with plenty of fluids are equally important steps to maintain skin strength.
How are deep bedsores treated once the skin breaks open?
Once the skin opens, treatment becomes more complex and requires a healthcare team. The wound must be carefully cleaned and dressed with special bandages that promote healing. Doctors may need to remove dead tissue, a process called debridement, to prevent infection. In severe cases involving deep tissue or bone, negative pressure wound therapy or even reconstructive surgery might be necessary.
When should I call a doctor about a suspected bedsore?
You should contact a healthcare provider as soon as you notice an area of persistent redness or broken skin, especially if the person has limited mobility. Seek immediate medical attention if you see signs of infection, such as pus-like drainage, increased swelling, foul odor, increased heat around the wound, or if the person develops a fever. Infections can quickly spread to deeper tissues or bone.
Will rubbing or massaging the skin help prevent a pressure sore?
No, this is a common and dangerous myth. You should never massage or vigorously rub skin over a bony prominence that is already showing signs of redness or pressure. Friction and shearing forces can actually cause further damage to the vulnerable underlying tissues and blood vessels, accelerating the development of an ulcer. Instead, focus on removing the pressure completely.
How long does it usually take for a bedsore to heal?
Healing time depends entirely on the severity, or stage, of the ulcer. Early-stage bedsores where the skin is unbroken can often resolve in a few weeks with strict pressure relief and good care. However, deep ulcers that expose fat, muscle, or bone can take many months to heal and may require intensive intervention, including specialized equipment and long-term nursing care.
How can ScanSkinAI help with bedsores or pressure ulcers?
ScanSkinAI can help you monitor areas of concern by allowing you to track changes in skin color, texture, and wound appearance over time. However, our artificial intelligence is only a screening aid and educational tool, never a substitute for a professional medical diagnosis. Because pressure ulcers can worsen rapidly and lead to severe infections, you should always have a healthcare provider evaluate any persistent skin breakdown.
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Medical References
Information on this page is sourced from and verified against reputable medical resources:
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Medical Disclaimer: This information is for educational purposes only and is not intended as medical advice. The content on this page should not be used to diagnose or treat any health problem. Always consult with a qualified healthcare professional for proper medical evaluation, diagnosis, and treatment of your condition.