What it is
In short A pressure sore happens when skin and underlying tissue are damaged by unrelieved pressure, shear, or friction—often over bony areas in people who sit or lie in one position for long periods. Early action prevents deeper wounds and infection.
Key idea: Rotate positions on a schedule, use proper cushions/mattress, keep skin clean and dry but moisturized, and support protein and calorie needs.
Urgent red-flags
- Fever, chills, or feeling unwell with a wound
- Rapidly spreading redness, warmth, bad odor, or pus
- Black/purple skin that’s quickly worsening or new severe pain
- Visible bone/tendon or deep crater; signs of sepsis (confusion, fast heart rate)
Seek immediate care—deep infection and osteomyelitis can occur.
Who is at risk
- Limited mobility, wheelchair/bed-bound
- Diabetes, vascular disease, anemia, malnutrition
- Incontinence, moisture, or sweating
- Older age, thin skin, prior pressure injuries
- Sedating medicines; dementia or poor awareness of pain/position
Common sites
Lying on the back
- Back of head, shoulder blades
- Elbows, spine, tailbone/sacrum
- Heels
Side-lying & sitting
- Hips/greater trochanters, knees/ankles (bony contact)
- Ischial tuberosities (“sitting bones”), sacrum/coccyx
- Heels and toes, especially with sheets pulling
Staging (1–4, unstageable, deep tissue)
| Stage | Skin findings | Notes |
|---|---|---|
| Stage 1 | Intact skin with non-blanchable redness over a bony area; may feel warm/firm/painful | Earliest warning—offload pressure urgently |
| Stage 2 | Partial-thickness loss of skin (epidermis/dermis); shallow open ulcer or blister | Keep clean, moist-healing dressings, protect from shear |
| Stage 3 | Full-thickness skin loss; fat may be visible; no exposed bone/tendon | May need debridement; infection risk rises |
| Stage 4 | Full-thickness tissue loss with exposed bone, tendon, or muscle | High infection risk; urgent specialist care |
| Unstageable | Base covered by slough/eschar; depth unknown | Debridement (when appropriate) reveals true stage |
| Deep Tissue | Purple/maroon discoloration or blood-filled blister | From pressure/shear; can progress quickly |
Prevention checklist
Turn & offload
- Reposition at least every 2 hours in bed; every 15–30 minutes in chair (brief weight shifts)
- Heels off the bed—use pillows/heel protectors
- Use 30° side-lying (not directly on the hip)
- Keep head of bed as low as safely possible to reduce shear
Surfaces & cushions
- High-quality foam or alternating-pressure mattress when high risk or existing sores
- Wheelchair cushion (gel/air/contour) fitted by therapist
- Don’t sit on donut cushions—can worsen pressure
Skin routine
- Inspect skin daily (sacrum, heels, hips); check for non-blanching redness
- Cleanse gently; pat dry; apply barrier cream where moisture exposed
- Moisturize dry skin; avoid vigorous rubbing over bony areas
Movement & fit
- Adjust splints/oxygen tubing/catheters to avoid pressure points
- Keep sheets smooth; avoid wrinkles and “friction burn”
- Encourage small, frequent mobility as able; physical therapy referral
Moisture & incontinence care
- Prompt cleanse after urine/stool; use pH-balanced cleansers
- Apply zinc oxide or dimethicone barrier creams each change
- Breathable briefs; avoid plastic underpads directly on skin
- Consider fecal/urine diversion devices (clinician-guided) for severe cases
Nutrition for healing
- Target adequate calories and protein (protein most meals/snacks)
- Hydration plan; consider dietitian for tailored needs
- Vitamin C and zinc only if deficient or advised—avoid high doses without guidance
Wound care options
Dressings (match to wound)
- Foam for moderate drainage; cushioning
- Hydrocolloid for shallow, low-drainage wounds (not infected)
- Alginate for heavy drainage; needs cover dressing
- Hydrogel for dry wounds/eschar (when appropriate)
- Silver/iodine dressings short-term if high bioburden (clinician guided)
Debridement
- Autolytic (occlusive dressings), enzymatic ointments
- Conservative sharp and surgical debridement by trained clinicians
- Stable, dry heel eschar may be left intact unless infection—specialist decides
Advanced options
- Negative pressure wound therapy (vacuum-assisted) for select deep wounds
- Consult wound clinic for stalled wounds or complex cases
Pain & comfort
- Time oral pain medicine before dressing changes
- Moist dressings reduce pain vs. dry gauze
- Pressure relief cushions and gentle positioning supports
For caregivers
- Set a written turning schedule; use phone alarms
- Log wound size, drainage, odor, pain; bring to visits
- Use draw sheets/lift devices—avoid dragging the skin
Quick answers
How fast can a sore develop?
High-risk skin can break down within hours under constant pressure—especially heels and sacrum. That’s why scheduled turning matters.
Is redness always bad?
If a red area doesn’t blanch (stay white briefly when pressed) or feels warm/firm, it’s an early injury—offload right away.
Do I need a special mattress?
People at moderate to high risk or with existing sores often benefit from high-quality foam or alternating-pressure surfaces—get fitted advice.
Should I use antibiotic ointment?
Not routinely. Choose dressings matched to drainage; reserve antibiotics for clear infection under clinician guidance.
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