A keloid is a scar that doesn’t know when to stop: a firm, raised, often shiny growth that spreads beyond the original wound. It isn’t dangerous or cancerous, but it can itch, ache, and keep growing for months or years. What sets it apart from an ordinary thick scar is less how it looks on a given day than how it behaves over time. Treatment is usually a matter of flattening and calming it, often with more than one method, rather than a single cure.
What a Keloid Looks and Feels Like
Keloids are usually firm and rubbery, with a smooth, shiny surface that sits raised above the surrounding skin. New ones often look pink or red and may darken over time. Many turn red-brown or purple-brown, especially on darker skin, where the color difference from the surrounding skin stays obvious.1Rejuvence Clinic. Keloid vs Normal Scar: What’s the Difference? Color varies across a single keloid and from person to person, and it can change over months.2medRxiv. A Prototype Machine Learning Pipeline for Assessing and Tracking Keloid Scars
The hallmark is sideways spread past the edges of the original wound, sometimes into claw-like or dumbbell shapes. Keloids favor the upper body: chest, shoulders, upper back, jaw, and earlobes.3PubMed. Involvement of upper torso stress amplification, tissue compression and distortion in the pathogenesis of keloids Skin on the chest, shoulders and back sits under more constant tension, and that pull pushes scar cells to keep making tissue.4PubMed. Involvement of upper torso stress amplification, tissue compression and distortion in the pathogenesis of keloids Common triggers include ear piercings, acne, chickenpox, surgery cuts, burns, and even small scratches or bug bites.
When you compare photos with your own scar, look at the edges first. A keloid’s border reaches well beyond the line of the original cut or piercing. Earlobe keloids often look like a round ball or bead on or behind the lobe, while chest keloids tend to be flat-topped, spreading plaques that can resemble a butterfly or crab.
Photos can also mislead. Lighting and camera angle change how raised a keloid looks, and a flash can wash out its color, so soft daylight gives a fairer comparison. A scar that matches a photo in color but not in behavior isn’t necessarily a keloid.
To track your own scar, take a photo every month in the same light with a ruler beside it. Note whether it grows past the original wound line, and record how much it itches or hurts. That record shows a doctor how the scar has changed far better than memory does.
Keloid or Raised Scar
A raised scar is a thick scar that stays within the wound. Growth beyond the edges of the original wound is the main feature that separates a keloid from it.5PubMed Central. Hypertrophic scars and keloids: Overview of the evidence and practical guide for differentiating between these abnormal scars A raised scar typically grows hard for a few months, levels off, then partly flattens on its own.6PubMed Central. Hypertrophic scars and keloids: Overview of the evidence and practical guide for differentiating between these abnormal scars A keloid usually keeps growing or holds steady for years without fading. Timing is one clue among several, so a doctor weighs it together with shape and edges.
Under a microscope, keloids contain thick, tightly packed bundles of collagen, while raised scars have small nodules of finer fibers.7PubMed Central. Morphological and immunochemical differences between keloid and hypertrophic scar If a doctor is unsure, a small skin sample can settle it, though that is rarely needed. The two also respond differently to treatment, so the label matters for planning.
Raised scars often improve with time and silicone alone, so waiting may be reasonable. Keloids rarely fade and can recur after surgery, so a doctor will plan extra steps.
Other lumps can look similar. A cyst or infected piercing bump is usually tender, may drain, and can come and go. Any fast-growing, bleeding, or ulcerating lump should be checked, since rare skin cancers can mimic keloids. A dermatologist can usually tell by look and history, and will take a sample if anything seems unusual.
Why Keloids Itch and Hurt
About 86% of people with keloids report itching, and about 46% report pain.8PubMed. Pruritus, pain, and small nerve fiber function in keloids: a controlled study Itch is usually felt at the keloid’s edge, while pain is mostly felt in its center.9PubMed. Pruritus, pain, and small nerve fiber function in keloids: a controlled study About 43% find light touch, like clothing brushing over it, painful.10PubMed. Pruritus, pain, and small nerve fiber function in keloids: a controlled study The small nerve fibers inside keloids don’t work normally, almost like a localized nerve problem.11PubMed. Pruritus, pain, and small nerve fiber function in keloids: a controlled study The edge is where the scar is actively spreading into healthy skin, while the middle is thicker tissue, where pain can feel like a deep ache or a sharp sting.
Pain and itch are the strongest drivers of how much a keloid weighs on someone’s mood and wellbeing.12PubMed. Burden of Keloid Disease: A Cross-sectional Health-related Quality of Life Assessment Keloids in visible places are linked to more anxiety, depression and self-consciousness, and women report more distress than men.13PubMed Central. Effects on quality of life and psychosocial wellbeing in Chinese patients with keloids People tend to rate their own scars worse than doctors do, especially for color, stiffness and thickness.14PubMed. Patient-related keloid scar assessment and outcome measures
While you wait for treatment, avoid scratching, which can irritate and inflame the keloid. Tapping the spot or using a cold pack is safer. Loose, soft clothing over chest and shoulder keloids reduces painful rubbing.
Who Gets Keloids
Keloids are more common in people with darker skin, affecting roughly 5% to 16% of African, Hispanic and Asian people.15PubMed Central. Emerging and Novel Therapies for Keloids Genes play a part, and inherited risk is largest in people of African ancestry.16PubMed Central. Multi-ancestry meta-analysis of keloids uncovers novel susceptibility loci in diverse populations Men and women are affected about equally, with most keloids starting in the teens.17PubMed Central. Emerging and Novel Therapies for Keloids They are most common between ages 10 and 30, can worsen in puberty and pregnancy, and often settle after menopause.18PubMed Central. Adverse Effects of Pregnancy on Keloids and Hypertrophic Scars A parent or sibling with keloids makes you more likely to form one, though it doesn’t guarantee you will.
Before a piercing or surgery, ask whether the procedure is necessary, especially on earlobes, chest or shoulders. Tell the surgeon about past keloids so they can plan prevention, and start silicone or pressure early on the healing wound, as covered in the prevention section.
Steroid Injections, the Usual First Treatment
The standard first treatment is a steroid injected directly into the keloid every few weeks. Keloids shrink anywhere from half to completely with steroid shots alone.19PubMed Central. Triamcinolone acetonide intralesional injection for the treatment of keloid scars: patient selection and perspectives But about a third come back within a year and half within five years.20PubMed Central. Triamcinolone acetonide intralesional injection for the treatment of keloid scars: patient selection and perspectives Roughly half of keloids respond poorly to steroids.21PubMed. Treatment of keloid scars with intralesional triamcinolone and 5-fluorouracil injections – a randomized controlled trial
The doctor uses a fine needle, which can sting; numbing cream may help. Sessions are usually repeated every 4 to 6 weeks over several months. The keloid shrinks a little after each injection, so a single visit rarely does the job. Flattening is gradual, and the itch often eases first.
The most common side effects are thinned, dented skin and small visible blood vessels around the spot.22PubMed Central. Intralesional Corticosteroid Administration in the Treatment of Keloids: A Scoping Review on Injection Methods In one trial about 44% of people had skin thinning and 50% had visible vessels.23PubMed. Treatment of keloid scars with intralesional triamcinolone and 5-fluorouracil injections – a randomized controlled trial Lighter or darker patches can also appear, which may stand out more on darker skin.24PubMed Central. Triamcinolone acetonide intralesional injection for the treatment of keloid scars: patient selection and perspectives If the skin starts to look thin or dented, tell your doctor so the dose can be adjusted.
Other Injections When Steroids Aren’t Enough
5-FU (5-fluorouracil), a drug that slows cell growth, can be injected into keloids.25PubMed Central. Clinical Efficacy of 5-Fluorouracil and Bleomycin in Dermatology It works about as well as steroid shots, with far less skin thinning: 8% versus 44% in one trial.26PubMed. Treatment of keloid scars with intralesional triamcinolone and 5-fluorouracil injections – a randomized controlled trial That makes it a fit for visible areas like the face.27PubMed. Treatment of keloid scars with intralesional triamcinolone and 5-fluorouracil injections – a randomized controlled trial A doctor may choose 5-FU if you have had thinning before or appearance is a priority. It isn’t free of side effects, though: soreness, darkening of the skin and small ulcers can occur at the injection site. Combining a steroid with 5-FU works better than 5-FU alone.28PubMed Central. Clinical Efficacy of 5-Fluorouracil and Bleomycin in Dermatology
Bleomycin, another growth-slowing drug, improves keloids more than steroids or 5-FU in pooled results.29PubMed. The efficacy of bleomycin for treating keloid and hypertrophic scar: A systematic review and meta-analysis In one comparison, bleomycin keloids didn’t return while many 5-FU-treated ones did.30Journal of Dermatology & Dermatologic Surgery. Comparative study between intralesional injection of bleomycin and 5-fluorouracil in the treatment of keloids and hypertrophic scars
Both drugs are used off-label for keloids, so not every clinic offers them. They are often given alongside or after steroids. It’s worth asking about them if steroids caused thinning or stopped working.
Surgery and Why It Needs Backup
Cutting a keloid out brings quick relief from pain and itch.31PubMed Central. Surgical Excision with Adjuvant Therapies in the Management of Keloids: A Systematic Review But with surgery alone, keloids come back in 45% to 100% of cases, sometimes larger.32PubMed Central. Surgical Excision with Adjuvant Therapies in the Management of Keloids: A Systematic Review The cut creates a new wound, and that wound can trigger the same overactive scarring that made the keloid. So surgeons pair removal with steroid shots, radiation, or pressure, started soon after the operation while the wound is healing and most vulnerable.
Low-dose radiation to the wound right after removal is one of the most effective add-ons.33PubMed. Radiation therapy modalities for keloid management: A critical review In one group, only about 13% returned by 18 months.34PubMed Central. A Retrospective Registry Study Evaluating the Long-Term Efficacy and Safety of Superficial Radiation Therapy Following Excision of Keloid Scars A typical schedule is five short daily sessions.35PubMed Central. Single Institution Experience of Postoperative Electron Beam Radiation Therapy in the Treatment of Keloids The most common side effect was temporary darkening of the skin, with no cancers seen during follow-up.36PubMed Central. A Retrospective Registry Study Evaluating the Long-Term Efficacy and Safety of Superficial Radiation Therapy Following Excision of Keloid Scars
Most small keloids are removed under local anesthetic in a clinic. Radiation, if used, usually starts within a day or two of surgery. Expect follow-up visits for a year or more to catch early regrowth, and report any new firm tissue on the scar line early.
Freezing, Lasers and Silicone
Freezing destroys keloid tissue, either from the surface or with a needle inside it. Surface freezing left pale patches in 91% of people in one study.37PubMed Central. Intralesional cryotherapy for hypertrophic scars and keloids: a review Freezing from inside caused no marked pale patches.38PubMed Central. Intralesional cryotherapy for hypertrophic scars and keloids: a review People with darker skin can ask about the needle method.
With surface freezing, liquid nitrogen is applied to the keloid, which blisters and then peels as the treated tissue dies off. With needle freezing, a probe goes into the center and spares the skin surface. Several sessions are usually needed, and the area can be sore and swollen for a few days.
Vascular lasers cut blood supply to the keloid, helping reduce redness and bulk.39PubMed Central. Fractional Carbon Dioxide, Long Pulse Nd:YAG and Pulsed Dye Laser in the Management of Keloids Fractional lasers make tiny holes that prompt the skin to rebuild more normal collagen.40PubMed Central. Fractional Carbon Dioxide, Long Pulse Nd:YAG and Pulsed Dye Laser in the Management of Keloids Lasers usually support other treatments rather than replace them.
Silicone gel sheets reduce keloid thickness and redness.41PubMed Central. Silicone gel sheeting for preventing and treating hypertrophic and keloid scars They rarely make a keloid disappear completely.42Journal of Clinical and Aesthetic Dermatology. An Evaluation of Evidence Regarding Application of Silicone Gel Sheeting for the Management of Hypertrophic Scars and Keloids They have few side effects and work alongside other treatments.43Journal of Clinical and Aesthetic Dermatology. An Evaluation of Evidence Regarding Application of Silicone Gel Sheeting for the Management of Hypertrophic Scars and Keloids Wear them most of the day, ideally 12 hours or more, on clean dry skin, and keep going for several months, since results are slow. Wash and reuse sheets as directed; gels suit faces and joints.
Preventing a New Keloid
Silicone sheets reduce the chance of raised scars forming in people prone to them.44PubMed Central. Silicone gel sheeting for preventing and treating hypertrophic and keloid scars Reducing tension on a wound, especially on the chest and shoulders, lowers risk.45PubMed. Involvement of upper torso stress amplification, tissue compression and distortion in the pathogenesis of keloids So tape or support new chest and shoulder wounds and limit stretching while they heal.
For a new wound, keep it clean and treat infection quickly, since inflammation feeds scarring. Begin silicone once the wound has fully closed. Watch for raised growth at 1 to 3 months and see a doctor early, as small keloids respond better.
If you want a piercing anyway, a spot away from the chest, shoulders and earlobes is less risky, though no spot is risk-free. Not every necessary operation can be avoided, so the better step there is to plan prevention with the surgeon beforehand.