10 Risk Factors for Pressure Injury You Should Know
Pressure injuries, also called pressure ulcers or bedsores, can develop when constant pressure reduces blood flow to the skin and underlying tissue for too long. They are more likely to occur over bony areas such as the heels, hips, and sacrum, especially in people who spend long periods in bed or in a chair.
Understanding each risk factor for pressure injury can help caregivers and patients recognize who is most vulnerable and take steps to protect the skin before damage becomes more serious. Below are 10 common pressure injury risk factors you should know.
1. Limited Mobility or Immobility
One of the most important risk factors for pressure injury is the inability to move or change position regularly. People who are bedridden, recovering after surgery, living with paralysis, or using a wheelchair for long periods may not be able to shift weight often enough to relieve pressure on vulnerable areas.
2. Prolonged Pressure Over Bony Areas
Pressure injuries often develop where the body presses against a mattress, chair, or other surface for too long. Common high-risk areas include the heels, hips, elbows, ankles, and sacrum. The sacral area is especially vulnerable in people who spend a lot of time lying on their back.
When pressure is not relieved, the skin and deeper tissue may not receive enough oxygen and nutrients, increasing the risk of tissue damage and breakdown.
3. Friction and Shear
Friction happens when the skin rubs against bedding, clothing, or another surface. Shear happens when the skin stays in place while deeper tissue shifts, such as when someone slides down in bed. Both can weaken the skin and raise the risk of pressure injury, especially in the sacral area.
In high-risk situations, prevention may include careful repositioning, moisture control, and added protection for vulnerable skin. For patients at risk of sacral skin breakdown, a dressing designed for the sacral area may be considered as part of a broader skin protection plan.
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4. Moisture and Incontinence
Excess moisture is another major pressure ulcer risk factor. Sweat, wound drainage, and especially urinary or fecal incontinence can weaken the skin barrier and make skin more fragile. When moisture is combined with pressure and friction, the risk of skin breakdown becomes even greater.
This is why routine skin care, gentle cleansing, and moisture management are important parts of pressure injury prevention.
5. Poor Nutrition and Dehydration
Skin and tissue need enough protein, calories, fluids, and nutrients to stay healthy and recover from stress. Poor nutrition or dehydration can reduce tissue tolerance and slow healing, making pressure injury more likely.
Older adults, post-surgical patients, and people with chronic illness may need closer nutritional support to help protect skin integrity.
6. Aging or Fragile Skin
As skin ages, it often becomes thinner, drier, and more fragile. Older adults may also have reduced elasticity, poorer circulation, and more difficulty moving independently. These changes can make the skin more vulnerable to pressure, friction, and moisture-related damage.
7. Reduced Sensation
People who cannot feel pain or discomfort normally may not realize when pressure is building in one area for too long. This may happen in people with diabetes, spinal cord injuries, certain neurologic conditions, or reduced mental awareness.
Without normal warning signals, they may stay in one position long enough for tissue damage to begin.
8. Chronic Conditions That Affect Healing
Some health conditions make pressure injuries more likely by affecting circulation, oxygen delivery, or the body's ability to heal. Examples include diabetes, vascular disease, severe illness, and other conditions linked to poor tissue perfusion.
These patients may need more frequent skin checks and earlier intervention.
9. Medical Devices
Pressure injuries do not only happen over bony areas. They can also develop under medical devices such as oxygen tubing, masks, splints, casts, or other equipment that stays in contact with the skin for long periods.
Regular skin inspection and proper device positioning are important for reducing this risk.
10. Extended Time in Bed or in a Chair
People who spend most of the day in bed or seated in one position are at higher risk for pressure injuries, even if they are not completely immobile. Long periods without pressure relief can still damage tissue over time, especially when combined with other risk factors such as moisture, poor nutrition, or friction.
Who Is Most at Risk for Pressure Injury?
The people most at risk often include:
- Older adults
- Bedridden patients
- Wheelchair users
- People recovering after surgery
- Patients with incontinence
- People with diabetes or poor circulation
- Individuals with limited mobility or reduced sensation
These groups often have more than one risk factor at the same time, which is why early prevention matters.
How to Help Reduce the Risk
Pressure injury prevention usually works best when several strategies are used together. These may include:
- Repositioning regularly
- Using pressure-redistribution surfaces
- Managing moisture and incontinence
- Inspecting the skin frequently
- Supporting nutrition and hydration
- Reducing friction and shear during movement
For people at risk of sacral pressure injury, especially those who are bedridden or recovering after surgery, a sacral dressing may be considered as part of a broader prevention and wound-care plan.
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- 5-layer design balances absorption, protection, and breathability
- Soft silicone layer ensures gentle, painless removal
- Sacral shape fits curves of the sacrum and buttocks, preventing pressure injuries
- Suitable for sacral bed sores (Stages 1–4), surgical incisions, and pressure ulcers
When to Seek Medical Advice
It is important to act early if you notice redness that does not fade, skin discoloration, swelling, warmth, tenderness, drainage, or an area of skin that looks damaged after pressure is relieved. If there is an open wound, worsening pain, or signs of infection, medical advice should be sought promptly.
Final Thoughts
A risk factor for pressure injury is anything that increases the chance of skin and tissue damage caused by pressure. In many cases, pressure injuries develop when pressure combines with friction, shear, moisture, poor mobility, and reduced tissue tolerance.
Knowing these risk factors can help patients and caregivers recognize high-risk situations earlier and take steps to better protect vulnerable skin.
This article is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
