In short. How hypertrophic scars differ from keloids, why that distinction drives treatment, and the realistic role of injections, pressure, laser, surgery, and radiation.
Key points
- First-line care is usually non-surgical: silicone gel or sheeting, pressure therapy where feasible, and intralesional injections of corticosteroid-class medication, sometimes combined with other scar-modulating agents, given as a course over months.
- Laser can reduce redness and thickness.
- Surgery alone has the highest recurrence rate for true keloids, so excision is reserved for specific situations — a pedunculated earlobe keloid, a scar with functional problems — and is then paired with injections, pressure, or in selected cases postoperative radiotherapy, which substantially lowers recurrence.
Not all bad scars are the same disease. A hypertrophic scar is raised and red but stays within the boundaries of the original wound, and often flattens somewhat with time. A keloid grows beyond the wound margins into healthy skin, rarely regresses, and recurs after simple removal at rates reported between roughly half and nearly all cases. Confusing the two leads to treatment that fails — or makes things worse.
The problem being solved
Both conditions arise from an exaggerated healing response in which collagen production outruns breakdown. Risk is higher with darker skin types, with wounds under tension or healing slowly, over the chest, shoulders, upper back, jawline, and earlobes, and in patients with a family history. Earlobe keloids after piercing are a classic presentation.
Who it suits — and who it does not
Anyone with a scar that is thickening, itching, painful, or spreading deserves assessment, because early treatment is easier than late. Expectations must be calibrated first: the realistic goal of keloid treatment is control — flatter, softer, quieter — not cure. Patients unwilling to commit to months of combined therapy and follow-up are likely to be disappointed by any single intervention.
The options compared
Combination beats monotherapy
First-line care is usually non-surgical: silicone gel or sheeting, pressure therapy where feasible, and intralesional injections of corticosteroid-class medication, sometimes combined with other scar-modulating agents, given as a course over months. Laser can reduce redness and thickness. Surgery alone has the highest recurrence rate for true keloids, so excision is reserved for specific situations — a pedunculated earlobe keloid, a scar with functional problems — and is then paired with injections, pressure, or in selected cases postoperative radiotherapy, which substantially lowers recurrence. Each layer of the combination exists because the layer before it was not enough on its own.
What treatment can and cannot achieve
It can flatten and soften most hypertrophic scars substantially, and can control many keloids so they are quieter, smaller, and less symptomatic. It cannot guarantee that a keloid will never recur, restore normal skin texture and colour, or reliably make a large keloid vanish. Honest clinics talk about control and maintenance, not removal.
Recovery and course
Injection courses are spaced over weeks to months; improvement is gradual. Surgical sites heal like any scar revision, then enter the same long aftercare programme. Skin thinning, pigment lightening, and small visible vessels are recognized side effects of repeated injections and are weighed against the benefit.
Risks and recurrence
Recurrence is the central fact of keloid care and must be planned for, not feared. A treatment plan should include what happens if the scar regrows: further injections, adjuvant therapy, or acceptance of a stable controlled scar. Long-term follow-up for at least a year after any keloid intervention is part of the treatment, not an optional extra.
Arrange a scar review if
- A scar is growing beyond the edges of the original wound, or keeps itching and thickening months after healing.
- You have had a keloid before and now face surgery, piercing, or tattooing — prevention planning beats treatment.
- A previously treated keloid is regrowing, becoming painful, or ulcerating.
Frequently asked questions
How does a keloid differ from a hypertrophic scar?
A hypertrophic scar stays inside the boundary of the original wound and often flattens with time. A keloid grows beyond those margins into healthy skin, rarely regresses on its own, and recurs after simple removal in a large proportion of cases.
Why is surgery alone avoided for a keloid?
Excision on its own carries the highest recurrence rate for true keloids, so it is reserved for specific situations such as a pedunculated earlobe keloid or one causing functional problems, and is then paired with injections, pressure, or radiotherapy.
Is the goal of keloid treatment a cure?
Control is the realistic goal: flatter, softer, and quieter, rather than gone. Improvement comes gradually over months of combined therapy, and long follow-up for at least a year afterwards is part of the treatment because recurrence is a known possibility.
Risks & Limitations
- Reconstruction is usually staged — more than one operation is normal, and the plan may change as healing progresses.
- Donor-site scarring and discomfort, including after rib cartilage harvest.
- Partial or complete failure of a flap or graft, which may require further surgery.
- Scars are permanent. They mature and fade but never disappear.
- Asymmetry and the inherent limits of matching a normal side.
- Altered sensation, numbness or weakness in the operated area.
- Contracture, which may need release procedures later.
- Final assessment is made at 6–12 months, and longer in growing children.
When to Seek Care
- A flap or graft that turns dark, cold, black or stops bleeding when pricked.
- Fever above 38 °C, or spreading redness, warmth or discharge around a wound.
- New or worsening pain, swelling or fluid leakage from the operative site.
- Bleeding that does not stop with gentle pressure.
- Any change in a reconstructed area that concerns you, however minor.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — reconstructive surgery guidance
- World Health Organization (WHO) — burn and trauma care resources
- Chinese Medical Association, Plastic Surgery Branch — clinical guidance
- Cochrane Library — systematic reviews in wound and reconstructive care
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.