Spot Checker · Face
Sore that won't heal on the Face: Causes, Red Flags & When to Worry
Quick answer
A sore that won't heal on the face is often a sign of chronic sun damage and could indicate a common type of skin cancer, such as basal cell or squamous cell carcinoma. While it might just be an irritated acne breakout or shaving bump, a persistent lesion requires attention. The biggest red flag is a pimple or scab that bleeds, crusts over, and completely fails to heal after three to four weeks. If you notice this pattern, it is time to see a dermatologist for an evaluation.
Why a sore that won't heal on the face is different
The face has the highest density of sebaceous glands and the most cumulative UV exposure of any body site, so it shows acne, rosacea, sun damage and early skin cancers earlier than the rest of the body.
The skin on your face behaves differently than the rest of your body because it has the highest density of oil glands and receives the most cumulative sun exposure over your lifetime. This constant UV exposure makes the face the most common site for early skin cancers, making them much more likely causes for a non-healing sore here than conditions like diabetic or venous ulcers, which typically affect the lower legs. Additionally, daily habits often irritate facial skin. Friction from shaving, wearing face masks, and trapped residue from makeup or skincare products can easily trigger inflammation, keeping what would be a minor blemish from healing normally. While a stubborn sore on your face can certainly be alarming, most causes are highly treatable when caught early by your doctor.
The most common day-to-day triggers in this area are daily UV exposure, makeup and skincare residue, shaving (men), mask friction — each of which can produce or worsen a sore that won't heal here.
Most likely causes
Basal cell carcinoma
Classic "non-healing sore" — often on the face or scalp.
Squamous cell carcinoma
Scaly, sometimes ulcerated lesion on sun-damaged skin.
Venous leg ulcer
Shallow ulcer above the inner ankle in older adults.
Diabetic foot ulcer
Painless ulcer on pressure points in diabetes.
Red flags — see a clinician
- •Any sore that hasn't healed in 4 weeks
- •Recurs in the exact same spot
- •Bleeds, oozes or has rolled raised edges
- •In someone with diabetes or poor circulation
Self-care while you decide
- ✓Keep clean and covered with a non-stick dressing
- ✓Photograph weekly for comparison
- ✓See a clinician at the 4-week mark, sooner if growing
Not sure if it's serious?
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Check my sore that won't heal →Frequently Asked Questions
The most common causes are Basal cell carcinoma, Squamous cell carcinoma, Venous leg ulcer, Diabetic foot ulcer. Because the face sees daily UV exposure and makeup and skincare residue, these triggers also raise the likelihood of a sore that won't heal appearing here.
Most non-healing sores are harmless. However, you should seek a dermatology review if you notice: Any sore that hasn't healed in 4 weeks; Recurs in the exact same spot; Bleeds, oozes or has rolled raised edges.
Use the ABCDE rule — Asymmetry, irregular Borders, multiple Colours, Diameter over 6 mm, and Evolution (any change). On the face, also watch for sores that don't heal, pearly bumps with visible blood vessels, or any lesion that bleeds repeatedly. A free AI mole checker can help you track changes over time.
Try: Keep clean and covered with a non-stick dressing; Photograph weekly for comparison; See a clinician at the 4-week mark, sooner if growing. Avoid picking or squeezing, and photograph the area today so you can compare in 2–4 weeks.
Book a review if the spot is growing, changing colour, bleeding, painful, or persists more than 4–6 weeks. Same-day care is needed for spreading redness with fever, breathing trouble, or non-blanching purple spots.
Yes — our free AI mole and skin checker analyses a photo against thousands of dermatology images and flags ABCDE-style concerns within seconds. It is a screening aid, not a diagnosis, and we always recommend confirming any concerning result with a clinician.
Sore that won't heal elsewhere on the body
Medical disclaimer: This page is for general information and is not a substitute for professional medical advice, diagnosis or treatment. Always consult a qualified clinician about any concerning skin change. ScanSkinAI is a screening aid, not a diagnostic device.