Keloid: What Patients Need to Know

A keloid is a type of raised scar that extends beyond the edges of the original skin injury. It is not dangerous in most cases, but it can cause itching, discomfort, cosmetic concern, and sometimes limit movement depending on where it forms.

Overview: what a keloid is

A keloid is a firm, raised scar that develops when the skin produces too much collagen during healing. Unlike a normal scar, a keloid grows beyond the borders of the original wound and may continue enlarging for weeks, months, or even longer. It can form after a noticeable injury such as surgery or a burn, but it may also appear after acne, an ear piercing, an insect bite, or other minor skin trauma.

Keloids are benign, which means they are not cancer. Even so, they can be frustrating because they may itch, feel tender, become painful when rubbed by clothing, or affect confidence if they are in a visible area such as the earlobes, chest, shoulders, jawline, or neck. In some locations, especially over a joint, a larger keloid may also limit comfortable movement.

People sometimes use the term “raised scar” for any thick scar, but not all raised scars are keloids. A related scar type, called a hypertrophic scar, stays within the edge of the original wound and may flatten over time. A keloid behaves differently: it extends beyond the initial injury and is more likely to persist or recur after treatment. Understanding that difference helps patients set realistic expectations and seek the most appropriate care.

How keloids look and feel

Keloids usually appear as shiny, smooth, raised areas of thickened skin. Their color can vary depending on skin tone and the age of the scar. They may look pink, red, purple, brown, or darker than the surrounding skin. Early keloids can feel soft or rubbery, while older ones may become firmer.

Symptoms are not the same for everyone. Some keloids are mainly a cosmetic concern, while others cause noticeable physical discomfort. Common symptoms include:

• Raised skin that enlarges beyond the original wound
• Itching or burning
• Tenderness or pain
• Tightness, especially over the chest, shoulders, or joints
• Changes in color compared with nearby skin

Keloids often develop gradually. After the skin injury has closed, the scar may continue to thicken over time rather than settling down. This pattern can be confusing because the original wound may seem fully healed before the scar begins to grow. If a new or changing skin growth appears without a clear cause, a doctor may examine it to confirm that it is a keloid and not another skin condition.

Why keloids happen and who is more likely to get them

Keloids form because the body’s wound-healing response becomes overactive. During normal healing, collagen helps repair damaged skin. In keloid-prone skin, that repair signal continues longer than needed, leading to excess scar tissue. Doctors do not always know exactly why this happens in one person and not another, but genetics appear to play an important role.

Several factors can increase the chance of developing a keloid. Having a personal or family history of keloids is one of the strongest clues. Keloids are also more likely after skin injuries that cause inflammation or tension, such as surgery, burns, severe acne, vaccinations, body piercings, tattoos, cuts, or repeated friction.

Risk may be higher in younger people and in those with darker skin tones, although keloids can occur in any skin type. Certain body areas are especially prone to them, including the chest, shoulders, upper back, jawline, neck, and earlobes. People who have had troublesome acne scars may also ask a doctor whether a thick scar could represent a skin condition related to acne or a keloid response to healing.

Importantly, keloids are not caused by poor hygiene, and they are not contagious. They reflect how the skin heals, not something a person has done wrong. That can be reassuring for patients who feel discouraged when a scar keeps growing despite careful wound care.

How doctors diagnose a keloid

Diagnosis usually begins with a medical history and a close skin examination. A doctor will ask when the scar appeared, whether it followed an injury or procedure, whether it itches or hurts, and whether the patient or family members have had similar scars before. The location, size, shape, and behavior of the scar help distinguish a keloid from a hypertrophic scar or another skin growth.

In most cases, no special test is needed. Experienced clinicians can often diagnose a keloid by appearance and history alone. If the lesion looks unusual, changes rapidly, bleeds easily, or does not fit the typical pattern, the doctor may recommend further evaluation to rule out another condition. This careful approach is especially important when the scar is new, irregular, or arising without a known injury.

Diagnosis is also the time to discuss goals. Some patients want relief from itching or pain, while others are mainly concerned about appearance. Because keloids can come back after treatment, planning is often individualized. A dermatologist may lead care for skin-based treatments, while larger or complex scars may involve specialists in plastic surgery or reconstructive care.

Treatment options and what to expect

Keloid treatment depends on the scar’s size, location, symptoms, and how long it has been present. No single treatment works best for every patient, and recurrence is possible with any approach. For that reason, doctors often combine treatments rather than relying on just one method. The main goals are to reduce symptoms, flatten the scar, soften it, and improve appearance or function.

Common first-line treatments include corticosteroid injections placed directly into the scar. These may help reduce itching, tenderness, and thickness over a series of visits. Silicone gel sheets or silicone-based products may also be recommended to help manage scar remodeling over time. In selected cases, other options can include pressure therapy, cryotherapy, laser treatment, or medications injected into or applied to the scar.

Surgery can remove a keloid, but excision alone carries a significant risk that the keloid will return, sometimes larger than before. For that reason, surgery is usually paired with additional therapy such as injections, pressure treatment, or other specialist-directed measures. Patients considering dermatology care or procedural scar treatment benefit from discussing not only how the scar may look after treatment, but also the realistic possibility of recurrence and the follow-up needed to reduce that risk.

When a scar causes marked discomfort, functional limitation, or major cosmetic distress, referral to a team familiar with complex scar management can be helpful. Depending on the scar, treatment may overlap with broader skin lesion evaluation and treatment pathways when diagnosis needs clarification. Near the end of the care journey, some international patients choose assessment at Acibadem International, where multidisciplinary specialists in JCI-accredited hospitals diagnose and treat keloids with individualized plans.

Prevention and self-care after skin injury

People who know they are prone to keloids should tell their doctor before planned surgery, piercing, or cosmetic procedures. While keloids cannot always be prevented, the risk may sometimes be reduced by avoiding unnecessary skin trauma and by using preventive strategies after an essential procedure. This is especially relevant for ear piercing, elective tattoos, and cosmetic treatments that injure the skin.

Good wound care supports more orderly healing. In general, this means keeping the area clean, following medical advice about dressings, protecting the wound from repeated friction, and avoiding picking at scabs or acne lesions. Sun protection is also important because healing scars can darken with ultraviolet exposure, making them more noticeable even if the scar itself does not enlarge.

If a doctor recommends silicone sheeting, pressure earrings for earlobe scars, or follow-up injections after a procedure, using these measures consistently may help. Patients should avoid self-treating a growing scar with harsh products or repeated home remedies that irritate the skin. If a scar is becoming larger, itchier, or more uncomfortable, early professional advice is usually more useful than waiting for it to settle on its own.

When to seek medical care

It is sensible to see a doctor if a scar keeps growing beyond the original injury, becomes painful, starts interfering with movement, or causes persistent itching that affects sleep or daily comfort. Medical review is also appropriate if the scar develops after surgery or piercing and the patient wants to discuss ways to limit further growth. Early treatment may be simpler than managing a larger, established keloid.

A prompt assessment is especially important if the skin growth bleeds, ulcerates, changes rapidly, or appears without a clear preceding injury. Although keloids are benign, not every raised skin lesion is a keloid, so unusual features deserve professional evaluation. Patients with recurrent scars, a strong family history, or concern about appearance may benefit from a dermatologist’s opinion and, when needed, consultation with specialists in complex lesion assessment or reconstructive care.

Patients should also seek advice before elective procedures if they have had a keloid in the past. Discussing risk in advance may influence the choice of procedure, its location, and the follow-up plan. A qualified doctor can explain the likely benefits and limits of treatment and help patients make informed decisions that fit their symptoms and priorities.

Frequently asked questions

Is a keloid dangerous?

A keloid is usually not dangerous and is considered a benign overgrowth of scar tissue. However, it can cause itching, pain, cosmetic concern, or discomfort with movement depending on its size and location.

What is the difference between a keloid and a hypertrophic scar?

A hypertrophic scar stays within the borders of the original wound, while a keloid grows beyond those borders. Keloids are also more likely to persist and to come back after treatment.

Can a keloid go away on its own?

Some keloids may soften or become less active over time, but they do not usually disappear completely without treatment. If the scar is growing, itchy, painful, or bothersome, a medical assessment is reasonable.

Can piercing cause a keloid?

Yes. Ear piercing is a common trigger, especially in people who are already prone to keloid formation. Anyone with a past keloid or strong family history may want to discuss this risk before getting a piercing.

What is the best treatment for a keloid?

There is no single best treatment for every keloid. Doctors often use a combination of options such as steroid injections, silicone therapy, cryotherapy, laser treatment, pressure therapy, or surgery with follow-up treatment to reduce recurrence.

Can a keloid come back after treatment?

Yes, recurrence is one of the main challenges in keloid care. This is why treatment plans often include more than one method and may require follow-up over time.

References

• American Academy of Dermatology
• National Health Service
• Mayo Clinic
• DermNet
• National Institute of Arthritis and Musculoskeletal and Skin Diseases

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.