If you see a doctor in Singapore about a keloid, the first treatment offered is very likely a steroid injection. Intralesional corticosteroid injection is the most established and widely used first line therapy for keloids, and for good reason. It works for most patients, needs no surgery, has little downtime, and combines well with almost every other therapy.

This guide from The Clifford Clinic answers the practical questions patients ask most, using current evidence. It sits within our wider keloid scar treatment Singapore resource.

How Steroid Injections Work on Keloids

A keloid is a collagen factory that will not switch off. The steroid calms the overactive scar tissue and slows down the excess collagen that makes a keloid grow, so it stops building up and starts to break down [2]. Over successive sessions, the keloid becomes softer, flatter, paler and less itchy.

The medicine used is triamcinolone acetonide. The concentration and volume are tailored to the keloid’s size, thickness and location, and adjusted between sessions based on how the keloid responds.

How Well Do Keloid Injections Work?

The evidence is strong. Corticosteroids reliably reduce scar volume and relieve pain and itch, and most patients experience meaningful scar regression across a monthly course [2][5]. Relief from itch and tenderness often arrives before the visible flattening, which many patients find encouraging early in treatment.

Keloids can still recur after steroid treatment, which is why doctors often add other treatments and schedule reviews after the course. Injections control keloids very well, but they do not always cure them permanently. More on this in our keloid recurrence guide.

How Many Steroid Injections Will I Need?

Steroid injection is a course, not a one off. Injections are usually repeated monthly, because each dose works on the scar for several weeks before the next assessment, and a full course usually runs over several months [2].

Early treatment is better, because newer keloids respond to the steroid more readily than older, denser ones [2]. Small young keloids may respond in fewer sessions, while large or previously treated keloids may need more, or combination therapy.

What Happens During a Session

A session is quick. The doctor cleans the area, sometimes applies a topical anaesthetic or uses ice, then injects the corticosteroid directly into the body of the keloid. Because keloid tissue is dense and fibrous, the injection meets resistance, and larger keloids may need several small injections to spread the medicine evenly. The whole process takes only a few minutes. There is no true downtime, so you can return to work, shower and exercise the same day, though it is sensible to keep the area clean and avoid vigorous massage immediately afterwards.

Do Keloid Steroid Injections Hurt?

Injecting into dense scar tissue is uncomfortable, and the firm keloid resists the needle [2]. There is a characteristic stinging or burning as the medicine goes in.

The pain is brief, most patients tolerate it well, and it eases as treatment progresses, because the keloid softens over successive sessions. We reduce discomfort with topical anaesthetic beforehand, ice, fine needles and slow technique. For most patients, a few minutes of discomfort per month is an acceptable trade for a flattening keloid.

Side Effects and Risks

Recognised side effects of corticosteroid injection include pain during injection, skin thinning (atrophy), lightening of the skin (hypopigmentation), fine visible blood vessels (telangiectasia), acne, and, with large or frequent dosing, systemic effects such as adrenal suppression or menstrual changes [2]. In clinical studies the main adverse effects were telangiectasia and moderate atrophy, which were generally temporary and self resolving [5].

Two points matter for patients in Singapore. First, hypopigmentation is more common and more visible in darker skin tones, so injector technique and dose selection are important. Second, injecting only within the keloid rather than into surrounding fat avoids visible depressions in normal skin [2]. Notably, telangiectasia occurred less often when triamcinolone was combined with 5 fluorouracil than with triamcinolone alone, probably because lower steroid doses can be used when the two are combined [6]. Careful dosing, accurate placement and spacing sessions appropriately keep these risks low.

Combining Injections With Other Treatments

Combination therapy frequently outperforms injections alone. Adding 5 fluorouracil (5 FU) to triamcinolone gives greater scar reduction than either agent alone, because 5 FU curbs the rapid cell division that drives overgrowth while the steroid calms inflammation [6]. The combination of 5 FU, corticosteroids and laser ranks among the most effective intralesional approaches studied [7].

Injections also pair well with pulsed dye laser, which addresses redness and itch, and with silicone therapy to protect results. Cryotherapy before injection can soften a firm keloid so the medicine spreads more evenly. After surgery, injections into the healing wound help prevent the near universal recurrence of excision alone.

What Does a Keloid Steroid Injection Cost in Singapore?

Cost depends on the keloid’s size, the number of injection sites, and how many monthly sessions your keloid needs, since this is a course. Steroid injection is generally the most affordable keloid treatment starting point. Because a fair estimate needs an assessment of your specific keloid, we provide an individual quote at consultation rather than a fixed online price. For the full picture, read keloid treatment cost in Singapore.

Who Is a Good Candidate?

Steroid injections suit most keloids as a starting point, and particularly small to medium keloids, young keloids, itchy or painful keloids where symptom relief is often excellent, and patients who want to avoid or delay surgery. They are less suitable as sole therapy for very large or long established keloids, which usually need combination or surgical pathways.

Frequently Asked Questions

How many steroid injections are needed for a keloid?

Most patients need a course of monthly injections over several months. Small keloids may need fewer, while large or resistant ones may need more, or combination therapy [2].

What is the success rate of steroid injections for keloids?

Most patients experience meaningful scar regression, with strong evidence for reduced volume, pain and itch [2][5]. However, keloids can recur, so follow up matters [2].

How painful are keloid steroid injections?

There is brief stinging as the medicine enters the dense scar tissue. Most patients tolerate it well, topical anaesthetic helps, and injections become more comfortable as the keloid softens.

How much do keloid injections cost in Singapore?

It depends on keloid size and the number of sessions needed. Steroid injection is usually the most affordable starting point. We give an individual estimate at consultation.

Do steroid injections remove a keloid completely?

They usually flatten and soften the keloid substantially rather than erase it. Complete flattening is possible for smaller keloids, but a faint mark often remains and recurrence is possible.

The Clifford Clinic Approach

Over more than 16 years of treating keloid scars, The Clifford Clinic has found that keloids treated with steroid injections alone almost always come back. Our signature approach combines V Beam pulsed dye laser, botulinum toxin and steroid injections, supported by silicone. These act on different parts of the keloid at the same time, and together they can prevent recurrence. V Beam is central, and few centres offer V Beam for keloids.It can perform safely on darker skin tones, so patients across Singapore’s skin types can benefit. We never remove a keloid by surgery alone, because the scar comes back. For large or stubborn keloids, surgery combined with radiotherapy is a very effective option. We treat young keloids early and we choose pigment safe, skin tone aware treatments. You can read more about our clinic at cliffordclinic.com.

Medically reviewed content. This article is educational and does not replace a consultation. To discuss steroid injections for a keloid in Singapore, contact The Clifford Clinic.

References

Laser Therapy of Traumatic and Surgical Scars and an Algorithm for Their Treatment. Lasers in Surgery and Medicine. 2020.
2. Management of Keloids and Hypertrophic Scars. American Family Physician. 2024.
3. Laser Therapy for Treating Hypertrophic and Keloid Scars. The Cochrane Database of Systematic Reviews. 2022.
4. Treatment Response of Keloidal and Hypertrophic Sternotomy Scars, Comparison Among Intralesional Corticosteroid, 5 Fluorouracil and 585 nm Pulsed Dye Laser. Archives of Dermatology. 2002.

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Steroid Injections for Keloids in Singapore, Sessions, Evidence and Results