A “kelpid” is a common misspelling of keloid, a growth of extra scar tissue that forms where the skin has healed after an injury. Unlike a normal scar, a keloid keeps growing beyond the edges of the original wound, creating a raised, firm, often shiny mass that can be much larger than the injury that caused it. Keloids are harmless but can be itchy, painful, and cosmetically distressing, and they’re notoriously difficult to treat.
What Makes a Keloid Different From a Normal Scar
Every wound produces scar tissue as part of healing. In most cases, the body lays down just enough collagen to close the gap, and the scar stays within the boundaries of the original injury. Keloids break that rule. They keep producing collagen long after the wound has closed, and they spread horizontally into healthy skin that was never injured.
This is the key distinction between a keloid and its close cousin, the hypertrophic scar. A hypertrophic scar may look raised and red, but it stays within the wound’s original borders and eventually plateaus or even shrinks on its own. A keloid does neither. It continues to grow, sometimes for years, and rarely regresses without treatment. On the shoulder, keloids often take on a butterfly shape. On the chest, they can spread into a crab’s claw pattern. These distinctive shapes reflect the direction of skin tension in each area.
In lighter skin, keloids typically appear red and glossy. In darker skin, they tend to be darker, sometimes violet or nearly black. Both types feel firm and rubbery to the touch.
What Causes Keloids to Form
Keloids start with some kind of skin trauma: a surgical incision, a piercing, a burn, acne, even a minor scratch. The fibroblasts (the cells responsible for building scar tissue) go into overdrive, producing far more collagen than the wound needs. The main types of collagen that pile up are types I and III, which form dense, fibrous structures. Types V and VI also accumulate, especially early on.
What keeps a keloid growing is a self-reinforcing loop. The excess collagen stiffens the surrounding tissue, and that increased stiffness signals the fibroblasts to produce even more collagen. Mechanical forces like skin stretching amplify the process, which is why keloids favor high-tension areas like the chest, shoulders, upper arms, and earlobes. The fibroblasts also maintain a state of persistent low-grade inflammation, which further drives collagen production and allows the keloid to invade surrounding healthy skin.
Who Gets Keloids and Why
Keloids have a strong genetic component. They’re far more common in people of African, Asian, and Hispanic descent, and they tend to run in families. Research has identified specific immune system genes associated with keloid susceptibility. One of the most consistent findings across populations is a variant called HLA-DRB1*15, which has been linked to increased keloid risk in Caucasian, Thai, and Han Chinese studies. In one Thai study, 43% of keloid patients carried this variant compared to about 24% of the general population, more than doubling the odds.
Several other genetic markers have been identified in Chinese populations, and researchers have found that certain combinations of these markers are particularly strong predictors. But genetics alone doesn’t determine who gets a keloid. The trigger is always some form of skin injury, which is why prevention focuses on avoiding unnecessary trauma in people who know they’re prone.
How Keloids Are Treated
There’s no single cure for keloids, and recurrence after treatment is one of the biggest challenges. Most approaches combine two or more therapies to improve the odds.
Steroid Injections
The most common first-line treatment is injecting a corticosteroid directly into the keloid. This softens the tissue and can flatten the scar over time. Injections are typically given once a month, and most people need at least two or three sessions, though treatment can continue for six months or longer depending on how the keloid responds.
Surgical Removal With Follow-Up Therapy
Cutting out a keloid by itself is risky because the scar from the surgery can trigger a new keloid, often larger than the original. To prevent this, surgeons almost always pair excision with another therapy. Steroid injections usually start immediately after surgery, continue weekly for several weeks, then taper to monthly sessions for three to six months.
Radiation therapy after surgical removal has shown some of the best results. A 2025 meta-analysis found that when higher doses of radiation were used after excision, recurrence dropped to about 3.5%. Lower doses were far less effective, with recurrence rates around 34%. Treatment typically begins within 24 hours of surgery. Side effects are generally mild, mostly temporary redness and some long-term pigment changes in the skin.
Cryotherapy and Laser Treatment
Freezing a keloid with liquid nitrogen (cryotherapy) combined with steroid injections is another option. A study of 170 patients compared this approach to fractional laser treatment with a topical steroid cream. Both improved keloid appearance, but the laser combination produced better cosmetic results and significantly fewer side effects. Cryotherapy patients experienced more pain during treatment and had higher rates of visible blood vessel changes and skin thinning, side effects that persisted after treatment ended.
Preventing Keloids Before They Start
If you’ve had a keloid before, your priority is avoiding unnecessary skin injuries. That means being cautious about elective piercings, tattoos, and cosmetic procedures. When surgery is unavoidable, talk to your surgeon beforehand about a prevention plan.
Silicone gel sheeting is one of the most widely used preventive tools. These are thin, flexible strips applied directly over a healing wound. Most clinical protocols call for wearing the sheeting at least 12 hours a day, with some studies using them around the clock. The key is consistency over a long period. Researchers recommend continuing for at least 12 months, and ideally 18, to get an accurate picture of whether it’s working. Silicone doesn’t work for everyone, but it’s low-risk and easy to use at home.
Pressure garments, which apply steady compression to a healing wound, are sometimes used alongside silicone for keloids in areas where they can be worn comfortably, like the earlobes or limbs.
What Living With a Keloid Looks Like
Keloids aren’t dangerous, but they can significantly affect quality of life. Large keloids on visible areas like the face, neck, or chest can cause self-consciousness. Keloids over joints can restrict movement. Many people experience persistent itching or tenderness, especially in response to friction from clothing.
Treatment is often a long process with no guarantee of permanent resolution. Recurrence is common even after successful treatment, so many people manage keloids as a chronic condition rather than a one-time fix. If you’re prone to keloids, the most effective strategy combines preventive measures before any skin injury with early, aggressive treatment if a keloid begins to form.