Keloid Scars: What They Are, Images, and Treatment

A keloid is a type of scar that grows beyond the boundaries of the original wound it was meant to repair. Unlike a normal scar, which forms within the confines of the injured skin and gradually flattens and fades over time, a keloid grows continuously. It often extends well beyond the edges of the initial injury, creating a raised, thickened, and frequently discolored growth. This can lead to physical discomfort as well as significant cosmetic concerns.

A keloid is defined as a hypertrophic scar that extends beyond the margins of the original lesion. This single feature, the tendency to overstep the wound’s boundaries, definitively distinguishes a keloid from a hypertrophic scar. While hypertrophic scars are also raised and thickened, they remain within the wound’s original borders.

In most cases, keloids are not medically dangerous; they are entirely benign in nature. However, they can be associated with:

• Darker pigmentation compared to the surrounding skin, initially reddish and later becoming brownish
• A raised, thickened surface that protrudes significantly above the skin level
• Itching, which can sometimes be intense and persistent
• Cosmetic distress, particularly when keloids develop in visible areas such as the face, neck, chest, or ears

The Structure of Skin

To understand how keloids form, it is helpful to first explore the basic structure of human skin. This organ protects our bodies from the external environment.

The skin is composed of several distinct layers, each with unique cellular composition and function:

The Epidermis

The epidermis is the outermost layer of the skin, which is the part directly exposed to the environment. It is composed of stratified squamous keratinized epithelium: multiple layers of flattened epithelial cells arranged like the tiles of a floor stacked on top of one another.

• The innermost layer of the epidermis (the stratum basale) contains actively dividing stem cells that continuously produce new keratinocytes.
• As these cells mature, they move toward the surface, progressively flattening and losing their nuclei.
• The outermost layer (the stratum corneum) consists of dead, protein-filled cells (corneocytes) that form a tough, waterproof barrier protecting the skin against physical injury, pathogens, and water loss.
• Crucially, the epidermis is avascular; it contains no blood vessels. It receives all of its nourishment exclusively from the capillary network in the layer below.

Embedded within the epidermis are also melanocytes (pigment-producing cells), Langerhans cells (immune sentinel cells), and Merkel cells (involved in touch sensation).

The Dermis

The dermis lies directly beneath the epidermis and is a far thicker, more complex layer. It serves as the structural backbone of the skin and contains:

• Blood vessels and lymphatics: These supply the skin with nutrients and oxygen. More importantly, for wound healing, they serve as the highway through which inflammatory cells, growth factors, and building materials are delivered to the site of injury.
• Fibroblasts: The key cells responsible for producing the extracellular matrix of the dermis, particularly collagen and elastin fibers. Fibroblasts play a key role in scar formation, whether normal or pathological.
• Collagen fibers: The structural protein that gives skin its tensile strength and resilience. Collagen comprises approximately 70–80% of the dry weight of the dermis.
• Elastin fibers: Provide the skin with its elasticity and ability to return to its original shape after stretching.
• Sensory nerve endings: Responsible for the sensations of touch, pain, pressure, temperature, and itching.
• Hair follicles, sebaceous glands, and sweat glands: Skin appendages embedded within the dermis.

The Hypodermis (Subcutaneous Tissue)

Beneath the dermis lies the hypodermis (also called subcutaneous tissue or subcutis), composed mainly of adipose tissue (fat cells). The hypodermis provides thermal insulation, cushioning, and energy storage, and anchors the skin to the underlying muscles and bones.

The Wound Healing Process

Understanding how keloids form requires an understanding of normal wound healing. This is a beautifully orchestrated biological process that unfolds in a series of overlapping phases after any injury to the skin.

Phase 1: Hemostasis (Immediate Response)

The moment skin is injured and blood vessels are damaged, the body’s first priority is to stop the bleeding. Platelets in the blood aggregate at the site of injury and, together with the coagulation cascade (a series of protein reactions), form a blood clot (thrombus) that seals the damaged vessels and prevents further blood loss. The clot also serves as a temporary scaffold. This provisional matrix provides structural support for the healing cells that will follow.

Phase 2: Inflammation (Days 1–5)

Once bleeding is controlled, the body shifts to the inflammatory phase. Inflammatory cells are recruited to the wound site from the bloodstream:

• Neutrophils arrive first (within hours) to eliminate any bacteria that may have entered through the wound, preventing infection.
• Macrophages arrive next and take over the cleanup role. They phagocytose, or engulf, debris, dead cells, and bacteria. Crucially, macrophages also orchestrate the subsequent healing process by releasing a cocktail of growth factors and cytokines that signal fibroblasts and other cells to begin the repair phase.

The redness, warmth, swelling, and pain that characterize an inflamed wound are the visible signs of this essential inflammatory response.

Phase 3: Proliferation – The Core of Scar Formation (Days 5 to 21)

The proliferative phase is where the actual structural repair of the wound occurs. It involves several critical cell populations working in sequence:

• Angiogenesis (new blood vessel formation): Endothelial cells, which line blood vessels, proliferate and migrate into the wound to form new capillaries. These new vessels supply the healing tissue with the oxygen and nutrients needed for the intense metabolic activity of repair. The network of new capillaries gives healing wounds their characteristic reddish, “granular” appearance. This is known clinically as granulation tissue.

• Fibroblast Proliferation and Collagen Synthesis:

  • This is perhaps the most critical step in scar formation. Fibroblasts, stimulated by growth factors released by macrophages and other cells, migrate into the wound. They proliferate actively, increasing dramatically in number, and begin synthesizing large quantities of collagen and other extracellular matrix proteins. This collagen framework fills in the wound defect and restores tensile strength to the tissue.
  • At this stage, excessive or dysregulated fibroblast activity results in pathological scarring. When fibroblast proliferation is overly robust and collagen production surpasses the body’s normal regulatory mechanisms, the scar becomes raised and thickened. This can lead to either a hypertrophic scar, which remains confined to the wound boundaries, or a keloid, which extends beyond them.

• Re-epithelialization: While fibroblasts are rebuilding the dermis, epidermal cells (keratinocytes) migrate from the wound edges (and from surviving hair follicle remnants) across the surface of the granulation tissue, eventually covering the wound with a new epithelial layer. This closes the surface of the wound.

Phase 4: Remodeling (Weeks to Years)

In the final phase, the newly formed scar tissue undergoes gradual remodeling. During this process, the initially disorganized and collagen-rich repair tissue is progressively reorganized, matured, and refined. Collagen fibers are realigned along lines of tension, excess cells undergo apoptosis (programmed cell death), and the scar gradually softens, flattens, and (in most people) fades in color over months to years.

In individuals who develop keloids, this remodeling phase is profoundly abnormal. Rather than following the normal process of scar maturation and regression, fibroblast activity stays persistently elevated. Collagen production remains excessive, and the scar grows beyond its original boundaries. This abnormal growth can continue for months or even years after the initial injury.

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Causes and Risk Factors

As noted above, anyone can theoretically develop a keloid following a skin injury. However, the tendency to form keloids is significantly influenced by a combination of individual biological factors and external environmental triggers.

Types of Abnormal Scars

Before examining the causes of keloids specifically, it is worth understanding the full spectrum of abnormal scar formation, which includes:

• Atrophic scars: Scars that are depressed or sunken below the level of the surrounding skin, resulting from insufficient collagen production during wound healing. Common causes include acne, chickenpox, and surgical or traumatic wounds that heal under conditions of tissue loss or impaired healing. Examples include acne pitting and stretch marks.

• Hypertrophic scars: Scars that are raised and thickened compared to normal skin, resulting from excess collagen deposition. Crucially, hypertrophic scars remain confined within the boundaries of the original wound. They may be aesthetically problematic but often improve spontaneously over time. Unlike keloids, hypertrophic scars can generally be treated surgically with a low risk of recurrence.

• Keloids: Raised, thickened scars that, importantly, extend beyond the margins of the original wound. This outward expansion into surrounding normal skin is the defining feature of a keloid and what sets it apart from a hypertrophic scar. Keloids rarely improve spontaneously and have a strong tendency to recur after treatment, particularly after surgical excision alone. Some authorities classify keloids as benign fibrocytic skin tumors, since they are composed entirely of fibrotic cells derived from the dermis. This classification highlights their tumor-like growth characteristics.

Individual and Genetic Predisposing Factors

The following individual characteristics significantly increase the likelihood of developing keloids:

Genetic and Family Predisposition:

• Keloid formation has a well-established hereditary component. Individuals with a family history of keloids are substantially more likely to develop them. Both autosomal dominant and more complex polygenic inheritance patterns have been proposed. Specific genetic variants affecting genes involved in wound healing, collagen metabolism, and the immune response have been identified in some studies, though no single causative gene has been definitively established.

Ethnicity:

• Keloids are significantly more common in individuals with darker skin phototypes, particularly:
  • People of sub-Saharan African descent (where prevalence may be as high as 4–16% of the population)
  • People of Hispanic/Latino origin
  • People of Asian descent (particularly from East and Southeast Asia)

By contrast, keloids are relatively uncommon in individuals with very fair (Fitzpatrick type I) skin. The mechanism underlying this ethnic disparity is not fully understood but may relate to differences in melanocyte activity, immune cell behavior, and growth factor signaling in skin of different pigmentation types.

Sex:

• Keloids are more common in women than in men, though the reasons are not entirely clear. Hormonal factors, particularly estrogen, are thought to play a role. This is supported by the observation that keloids often develop or worsen during pregnancy, when estrogen levels are dramatically elevated, and may improve after menopause.

Age:

• Keloids preferentially affect younger individuals, with peak incidence between 10 and 30 years of age. This age distribution may reflect the higher levels of growth factors and more vigorous wound healing responses characteristic of youth. Keloids are uncommon in infants and in elderly individuals, whose wound healing responses are generally less vigorous.

Body Location:

• Certain areas of the body are significantly more prone to keloid formation than others, regardless of individual predisposition. High-risk anatomical sites include:
  • The earlobes (a very common site, particularly following ear piercing)
  • The chest (especially the sternum and upper chest)
  • The shoulders and upper arms
  • The upper back
  • The jaw and neck
  • The deltoid region

By contrast, keloids are rare on the face (except the jaw line), palms, soles, and genitalia.

External Triggering Factors

Any event that causes skin injury can trigger keloid formation in predisposed individuals. Common triggers include:

• Surgical incisions: Even clean, well-closed surgical wounds can provoke keloid formation in susceptible individuals. This is a significant concern in elective cosmetic or reconstructive surgery.
• Traumatic injuries: Cuts, abrasions, burns, and other accidental skin injuries
• Body piercing: Earlobe piercing is one of the most common precipitants of keloid formation; keloids developing on the earlobes after piercing are extremely common in predisposed individuals
• Tattoos: The repetitive puncturing of the skin involved in tattooing can provoke keloid formation
• Acne and folliculitis: Inflammatory skin lesions, such as acne, ingrown hairs, and folliculitis, can trigger keloid formation in susceptible individuals. This is especially common on the chest and back
• Chickenpox and other vesicular skin infections: Lesions that breach the skin barrier can heal with keloid formation
• Vaccination sites: Particularly BCG vaccination scars, which are a common cause of keloids in parts of Africa and Asia.
• Insect bites: Scratching of bite sites can introduce sufficient trauma to trigger keloid formation
• Exposure to sunlight: UV radiation may exacerbate keloid formation and increase pigmentation in existing keloids
• Chemical and other irritants: Topical substances that cause skin inflammation can contribute to abnormal scar formation

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Symptoms

Keloids are distinguished from the surrounding normal skin and from ordinary scars by a constellation of characteristic clinical features:

Appearance

Color: The color of a keloid typically evolves over time:

• In the early (active) phase, keloids appear reddish or pink. This color reflects the high density of new blood vessels, or hypervascularization, within the scar tissue. As the keloid matures, the color gradually shifts to brownish, dark brown, or sometimes hyperpigmented shades. In most patients, this is notably darker than the surrounding skin.
• In individuals with very fair skin, keloids may remain pink or reddish for longer periods.

Texture and Surface:

• The surface of a keloid is typically smooth and shiny, though the margins may be irregular.
• The texture is firm to hard, significantly more indurated (hardened) than normal skin or even ordinary hypertrophic scars.

Elevation:

• Keloids are markedly raised above the level of the surrounding skin, often by several millimeters or even more than a centimeter in larger lesions.
• The elevation is the result of the dramatically increased collagen content within the scar.

The Defining Feature: Extending Beyond Wound Margins

The cardinal distinguishing feature of a keloid, which sets it apart from all other scar types, is its tendency to grow beyond the boundaries of the original wound into the surrounding normal and previously uninjured skin. A keloid does not respect the edges of the wound; it continues to expand outward, sometimes forming large, irregular, claw-like projections or lobulated masses that can be considerably larger than the original injury would suggest.

This expansive growth:

• Can continue for months to years after the original injury.
• May eventually stabilize (though this is unpredictable).
• Is associated with the loss of normal skin mobility in the affected area. The thickened, rigid scar tissue restricts the natural movement and flexibility of the surrounding skin.
• Distinguishes keloids sharply from hypertrophic scars. These scars, though raised, are always confined to the original wound margins.

Absence of Skin Appendages

Keloid tissue lacks the normal skin appendages present in surrounding skin:

• Hair follicles are absent, so the surface of a keloid is smooth and hairless.
• Sebaceous glands (oil glands) are absent.
• Sweat glands are absent.

This absence of appendages means that keloid tissue behaves differently from normal skin in terms of moisture regulation and response to topical treatments.

Itching

Itching (pruritus) is a common symptom of keloids, though it does not occur in every case. When present, it can range from mild and intermittent to intense and persistent. The mechanism of keloid-associated pruritus is not fully understood but may involve:

• Neurogenic mechanisms related to the altered nerve fiber distribution within the scar tissue
• Local release of histamine and other pruritic mediators by mast cells within the keloid
• Skin dryness and tension at the keloid margins

The pruritus associated with keloids can be clinically significant because scratching the itchy area may further traumatize the skin, potentially worsening the keloid or triggering new lesions in predisposed individuals.

Pain and Tenderness

Some patients with keloids, especially those with larger or more active lesions that grow rapidly, report:

• Tenderness or sensitivity to touch within or around the keloid
• Aching or burning sensations in the affected area
• Sharp, shooting pains, particularly in keloids located over joints or areas of frequent movement or friction

Functional Impairment

Large keloids, particularly those located over joints such as the shoulders, elbows, or knees, can cause functional impairment. This happens when they restrict the normal range of motion in the underlying structures. Keloids on the face or neck may also lead to similar limitations. This is more of a concern with very large keloids or when multiple keloids develop in the same region.

Psychological Impact

The psychological and social burden of keloids should not be underestimated. Keloids, particularly those on the face, neck, ears, or other highly visible areas, can significantly impact:

• Self-esteem and body image: Many patients describe profound embarrassment, self-consciousness, and distress about the appearance of their keloids
• Social interactions: Avoidance of situations where the keloid may be visible or subject to comment
• Mental health: Studies have documented elevated rates of anxiety, depression, and impaired quality of life in individuals with keloids, particularly those who have been unable to find effective treatment
• Occupational and social functioning: Keloids may be misperceived by others as signs of disease or poor hygiene

These psychological dimensions of keloid disease are an integral part of the patient’s experience and should be taken seriously by healthcare providers.

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Treatment

The management of keloids remains one of the most challenging areas of dermatology and plastic surgery, primarily because of their strong tendency to recur following any treatment, particularly surgical excision. Unlike hypertrophic scars, which can often be successfully corrected surgically with a low recurrence rate, keloids frequently reform after removal. Sometimes, they return larger and more disfiguring than the original lesion.

A key principle in keloid management is that single-modality treatment is generally less effective than combination approaches. Modern keloid treatment increasingly relies on combining two or more therapeutic modalities to achieve better outcomes and reduce recurrence.

The ideal treatment for any individual patient depends on:

• The size and location of the keloid
• The patient’s skin type and individual risk profile
• The patient’s treatment goals (symptom relief vs. cosmetic improvement)
• Previous treatments and their outcomes
• The availability of specific treatments in the patient’s healthcare setting

Intralesional Corticosteroid Injections

Local steroid injections (intralesional corticosteroids) are currently the most widely used and best-established treatment for keloids, and are generally considered first-line therapy for most cases.

The most commonly used agent is triamcinolone acetonide, injected directly into the body of the keloid using a fine needle. The steroid exerts multiple therapeutic effects within the keloid:

• Reduces collagen synthesis by fibroblasts
• Increases collagen breakdown (through upregulation of collagenase activity)
• Reduces the inflammatory mediators that drive continued scar growth
• Reduces vascularity within the keloid

Typical treatment protocol:

• Injections are repeated every 4–6 weeks, usually for a series of 3–6 sessions or more
• Results typically include:
  • Flattening of the raised keloid tissue
  • Reduction in symptoms, particularly itching and tenderness
  • Lightening of pigmentation in some patients
  • Possible reduction in size, though complete resolution is uncommon

Limitations and side effects:

• The injections themselves can be quite painful, as the keloid tissue is very dense and injection requires considerable pressure
• Side effects may include skin atrophy (thinning and depression of skin around the injection site), telangiectasias (small dilated blood vessels), hypopigmentation (localized skin lightening), and systemic effects of corticosteroid absorption with excessive or frequent injections
• The recurrence rate after corticosteroid treatment alone remains significant

Topical Corticosteroid Therapy

Topical corticosteroid creams, gels, or occlusive dressings impregnated with corticosteroids provide a less invasive alternative or adjunct to intralesional injections. While generally less potent than direct injections, they may be useful:

• As maintenance therapy between injection sessions
• In patients who cannot tolerate injections (such as young children)
• For superficial or less well-established keloids
• As part of a combination treatment strategy

High-potency topical corticosteroids (such as clobetasol propionate) are typically used, often applied under occlusion (covered with a dressing) to enhance penetration.

Silicone Gel Sheets and Gels

Silicone-based products, including silicone gel sheets (adhesive sheets worn over the keloid) and silicone gels applied directly to the scar, represent one of the safest, best-tolerated, and most evidence-supported conservative treatments for keloids and hypertrophic scars. Silicone therapy is particularly recommended as a first-line and preventive treatment in patients at risk of keloid formation following surgery or injury.

The mechanism by which silicone improves scar appearance is not fully elucidated, but is thought to involve:

• Hydration of the stratum corneum, reducing transepidermal water loss and modulating fibroblast activity
• Pressure effects on the scar tissue
• Possible electrostatic effects that reduce collagen deposition

Clinical effects with consistent use (typically worn for 12–24 hours per day for a minimum of 2–3 months):

• Softening and flattening of the raised scar
• Reduction in redness and discoloration
• Relief of itching and tenderness
• Reduction in overall scar volume

Silicone sheets and gels are available over the counter without a prescription, are well-tolerated with minimal side effects (occasional skin maceration if worn for too long without airing), and can be used safely by patients of all ages, including pregnant women.

Cryotherapy

Cryotherapy, the application of extreme cold (typically liquid nitrogen at −196°C) to the keloid, destroys keloid tissue through cellular freezing and thawing. It can be used:

• As a standalone treatment for smaller keloids
• In combination with intralesional corticosteroid injections

Cryotherapy may reduce keloid volume and symptoms, but it carries a significant risk of hypopigmentation. This side effect involves permanent lightening of the treated skin, which limits its use. The concern is especially relevant for patients with darker skin tones, as they are already the population most commonly affected by keloids.

Laser Therapy

Several laser modalities have been used in the treatment of keloids:

• Pulsed-dye laser (PDL): Targets the blood vessels within the keloid, reducing vascularity and the supply of growth factors that sustain keloid activity. Most effective for red, actively growing keloids. Often combined with intralesional corticosteroids for enhanced efficacy.

• Carbon dioxide (CO₂) laser: Ablative laser that precisely removes keloid tissue. Associated with a high recurrence rate when used alone; results are significantly better when combined with intralesional corticosteroids or radiotherapy.

• Nd:YAG laser: May be used for deeper keloid tissue remodeling.

• Fractional laser resurfacing: A newer approach that may improve scar texture and pigmentation with lower recurrence risk.

Surgical Excision

Surgical removal of a keloid carries a high recurrence rate, with estimates ranging from 45% to 100% when surgery is used as the sole treatment. Moreover, the new wound created by surgery itself can potentially trigger an even larger keloid. For these reasons, surgical excision is rarely recommended as a standalone treatment for keloids.

When surgery is performed, it is almost always combined with adjunctive treatments to reduce recurrence risk:

• Intralesional corticosteroid injections beginning immediately post-operatively and continuing for several months
• Radiotherapy (see below)
• Silicone gel sheeting applied to the healing wound
• Pressure therapy

Combined surgical and adjunctive approaches have significantly better outcomes than surgery alone, with recurrence rates as low as 10–30% in some series.

Radiotherapy

Radiotherapy (radiation therapy) is an effective adjunct to surgical excision of keloids. Radiation is typically delivered to the surgical site within 24–48 hours of keloid excision (before new collagen synthesis begins) and inhibits the proliferation of fibroblasts in the healing wound, preventing keloid reformation.

Combined surgery plus radiotherapy is considered the most effective treatment available for large, recurrent, or refractory keloids, with recurrence rates of approximately 10–20% in many studies. However, the use of ionizing radiation raises concerns about:

• Long-term cancer risk (though absolute risk from the small fields and doses used is considered low)
• Availability of radiotherapy facilities
• Cost

Radiotherapy is therefore generally reserved for severe, large, recalcitrant keloids that have failed other treatments, particularly in anatomical sites where recurrence risk is very high (such as the sternum).

Emerging and Novel Treatments

Research into keloid treatment continues to advance, with several promising therapeutic modalities under investigation:

• Intralesional 5-fluorouracil (5-FU): An antimetabolite that inhibits fibroblast proliferation; often combined with corticosteroids for enhanced efficacy and reduced side effects of either agent alone
• Intralesional bleomycin: A cytotoxic antibiotic that inhibits collagen synthesis; effective in several controlled trials
• Intralesional verapamil: A calcium channel blocker that reduces collagen production by fibroblasts
• Botulinum toxin (Botox) injections: May reduce scar tension and fibroblast activity; early promising results in clinical studies
• Platelet-rich plasma (PRP): Still experimental for keloids
• Anti-TGF-β agents: Targeting the key growth factor driving fibroblast overactivity in keloids
• Immunotherapy: Emerging evidence for a role of immune dysregulation in keloid pathogenesis has generated interest in immunomodulatory approaches

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Prevention

While there is no fully reliable method for preventing keloid formation in genetically predisposed individuals, several practical measures can significantly reduce the risk of keloid development or progression, particularly following known skin injuries.

Minimizing Skin Trauma

The most fundamental preventive strategy is to minimize unnecessary skin trauma as much as possible in individuals known to be predisposed to keloid formation. This means:

• Avoiding elective body piercing: Ear piercing, in particular, is a leading cause of earlobe keloids. Predisposed individuals should be counseled about this risk before undergoing piercing.

• Avoiding tattoos: The repeated skin penetration involved in tattooing can trigger keloid formation at the tattoo site.

• Communicating with surgical teams: Patients who know they are prone to keloids should inform their surgeons before any planned surgery, so that appropriate preventive measures can be incorporated into the surgical plan (such as minimizing wound tension, using favorable suturing techniques, and planning for post-operative corticosteroid injections).

• Treating acne and folliculitis promptly: Inflammatory skin conditions that repeatedly injure the skin, such as acne, folliculitis, and ingrown hairs, should be treated aggressively. This helps minimize recurrent trauma.

• Protecting healing wounds from sunlight: UV radiation can exacerbate keloid formation and worsen pigmentation in existing keloids. Healing wounds and fresh scars should be protected with sunscreen (SPF 30+) or physical coverage from direct sun exposure.

Careful Wound Care After Injury

When a skin injury does occur in a predisposed individual, meticulous wound care can help optimize the healing environment and reduce the risk of keloid formation:

Moisturizing:

• Keeping the wound site adequately moisturized with emollient creams supports normal wound healing. Dry, desiccated wound edges are more prone to abnormal scarring. Moisturizing creams should be applied gently to the healing wound once it is closed and re-epithelialized.

Early silicone therapy:

• Silicone gel sheets or gels should ideally be applied to the healing wound as soon as the wound has closed (typically 2–4 weeks after injury or surgery), before abnormal scar activity can become established. Early initiation of silicone therapy has been shown to significantly reduce the severity of scar hypertrophy and keloid formation in high-risk individuals.

Topical corticosteroids and anti-inflammatory agents:

• The application of topical corticosteroids to the healing wound may help suppress excessive fibroblast proliferation that leads to abnormal scarring. A dermatologist can advise on appropriate formulations and application protocols.

Pressure therapy:

• Pressure garments or dressings applied to healing wounds, particularly those over the ears (after piercing or surgery) or the chest, exert mechanical pressure on the scar tissue. This pressure reduces fibroblast activity and collagen synthesis. Pressure therapy must be applied consistently (at least 23 hours per day) for months to be effective.

Managing itching to prevent scratching:

• If itching occurs at a healing wound site, antihistamines (either topical or oral) can help reduce the urge to scratch. This is important because scratching re-injures the healing skin, perpetuating the inflammatory stimulus for abnormal scar formation.

Sun protection:

• As noted above, consistent sun protection of healing wounds with broad-spectrum SPF 30+ sunscreen or physical coverage helps prevent UV-induced worsening of the scar and reduces hyperpigmentation.

Genetic Counseling

For individuals with a strong family history of keloids, especially those who have already developed multiple keloids, genetic counseling may be helpful. It can provide insight into the inherited nature of the condition and assist in making informed decisions about procedures that carry a risk of keloid formation.

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Frequently Asked Questions

Are keloids dangerous?

Keloids are entirely benign; they do not become cancerous and pose no direct threat to physical health. However, they can cause significant discomfort (itching, pain, restricted movement) and psychological distress, and their management can be frustrating due to their tendency to recur.

Can a keloid go away on its own?

Unlike hypertrophic scars, which often improve significantly over time without treatment, keloids very rarely resolve on their own. Some keloids may stabilize (stop growing) over time, and a degree of natural softening may occur, but complete spontaneous resolution is uncommon. Most keloids require active treatment to achieve meaningful improvement.

Why do keloids come back after removal?

Surgical removal of a keloid creates a new wound. For someone genetically predisposed to keloid formation, this new wound has the same risk of developing another keloid as the original injury did. In fact, the surgical wound may produce an even larger keloid. This is why keloid surgery is almost always combined with additional treatments (corticosteroid injections, radiotherapy) to suppress the wound healing response and reduce recurrence.

Is ear piercing safe if I am prone to keloids?

Ear piercing is not recommended for individuals with a known predisposition to keloid formation, as earlobe keloids following piercing are extremely common in susceptible individuals and can be very difficult to treat. If piercing is strongly desired, the individual should discuss the risks carefully with a dermatologist and, if proceeding, ensure immediate implementation of preventive measures (corticosteroid injections, silicone therapy) from the outset.

Can children develop keloids?

Keloids can develop at any age following skin injury, but they are most common in younger individuals, with peak incidence in the second and third decades of life. When keloids develop in children, treatment must be tailored to the patient’s age. For example, intralesional corticosteroid injections may require local anesthesia in young children. Additionally, certain treatments, such as radiotherapy, are often avoided in pediatric patients due to concerns about long-term radiation effects on developing tissues.

What is the best treatment for a keloid?

There is no universally “best” treatment for all keloids. Instead, the optimal approach depends on several factors: the keloid’s size, location, and history of prior treatment, as well as the patient’s skin type, age, and treatment goals. This makes the process highly individualized. In general, combination therapy (most commonly intralesional corticosteroids plus silicone therapy, with or without surgical excision) tends to produce better outcomes than any single treatment modality. A dermatologist or plastic surgeon with experience in keloid management is best placed to design an individualized treatment plan.

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