What it is
A wound or ulcer that fails to progress through normal healing stages, remaining open beyond the expected timeframe.
A wound or ulcer that fails to progress through normal healing stages, remaining open beyond the expected timeframe.

At a glance
What it is
A wound or ulcer that fails to progress through normal healing stages, remaining open beyond the expected timeframe.
Commonly experienced as
Evidence context
Research-supportedSee the evidence snapshotContext
Non-healing wound describes any wound, ulcer, or skin break that has not shown clear evidence of healing after four weeks — or fails to achieve complete closure after eight weeks — despite appropriate wound care. Chronic non-healing wounds include venous leg ulcers (impaired venous return causing tissue hypoxia), arterial ulcers (peripheral arterial disease reducing oxygen delivery), diabetic foot ulcers (neuropathy masking injury and poor circulation impairing healing), pressure ulcers (sustained pressure causing tissue necrosis), and cancer-related wounds. The most common underlying factors are diabetes (the leading cause globally), peripheral vascular disease, malnutrition, immunosuppression, infection, and chronic oedema. Holistic management addresses local wound care alongside systemic contributors — particularly nutritional status, blood glucose, and vascular health.
The Evidence
What the research says about non-healing wounds, and when to seek professional assessment without delay.
Non-healing wounds require professional assessment
Wounds that fail to progress after four weeks signal an underlying systemic issue — diabetes, poor circulation, or infection — that needs qualified evaluation. Evidence strongly supports addressing root causes alongside local wound care.
Seek urgent care if a wound shows rapidly spreading redness, warmth, swelling, or pus — these suggest active infection that can spread quickly. A wound that changes shape, colour, or size rapidly, or any wound accompanied by fever, needs prompt professional assessment. Do not wait to see if these signs resolve on their own.
A qualified clinician can assess vascular supply, screen for diabetes, identify infection, and determine wound type. Without identifying the root cause, wound care alone is unlikely to be effective. Early referral to a wound care specialist, vascular team, or diabetes service significantly improves outcomes.
Blood glucose optimisation has strong evidence for improving diabetic wound healing. Compression bandaging is strongly supported for venous leg ulcers. Nutritional support — particularly protein, zinc, and vitamin C — has strong evidence across wound types. Negative pressure wound therapy has strong evidence for complex or surgical wounds.
The most common drivers are diabetes, peripheral vascular disease, malnutrition, chronic oedema, and immunosuppression. Effective management addresses these systemic factors alongside local wound care. Treating the wound surface without addressing the underlying cause rarely leads to lasting improvement.
Optimising nutrition, managing blood glucose, supporting circulation through appropriate movement, and reducing pressure on affected areas all contribute to healing. Complementary approaches such as nutritional therapy may support systemic health alongside medical wound care. These are adjuncts to — not substitutes for — professional wound management.
Non-healing wounds require in-person professional evaluation to determine wound type, severity, and underlying cause. No digital platform can substitute for that assessment. If you have a wound that has not improved after four weeks, please consult a qualified healthcare professional promptly.
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