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Raised Acne Scars and Keloids: Why They Need a Completely Different Approach

Most conversations about acne scars are about pits — the ice-pick, boxcar and rolling scars where tissue was lost. But a significant minority of scars, especially on the jawline, chest, shoulders and back, go the other way: the skin heals with too much collagen and the scar rises above the surface, thick, firm, sometimes itchy or tender. These are hypertrophic scars and keloids, they are commoner on deeper skin tones, and the treatments that work for pits can make them worse. They need their own plan.

Hypertrophic Scar or Keloid?

A hypertrophic scar is raised but stays within the borders of the original injury, and it tends to flatten slowly over a year or two. A keloid grows beyond the original wound, keeps growing for months or years, is often itchy or painful, and does not regress on its own. Keloids run in families, favour the chest, shoulders, upper back, jawline and earlobes, and are several times more common on darker skin. Telling the two apart matters because keloids recur aggressively after any treatment that injures them — including surgery on its own. The American Academy of Dermatology’s keloid treatment guidance sets out the same distinction.

Why the Usual Scar Treatments Backfire

Pitted scars are treated by creating controlled injury — fractional laser, microneedling, subcision — so the skin rebuilds collagen where it is missing. Raised scars already have too much collagen; injuring them tells the skin to make more. Aggressive resurfacing, excision without follow-up, piercing or tattooing over keloid-prone skin, and picking at acne on the chest and back are all reliable ways to grow a keloid. The scar mapping at the first visit, described in which acne scar treatment do you need, exists precisely to separate the two kinds before anything is done.

What Actually Flattens Them

The first-line treatment is a course of injections directly into the scar — anti-inflammatory medication that softens the collagen and shrinks the scar over a series of sessions three to four weeks apart. It is combined, depending on the scar, with cryotherapy (freezing) to reduce bulk, silicone gel or sheeting worn daily to flatten and prevent regrowth, and pressure for earlobe keloids. Laser has a role, but a targeted one: vascular lasers to reduce the redness and itch, and low-energy fractional treatment only once the scar is flat and stable. Surgical removal is reserved for large keloids and is never done alone — without injections, radiotherapy or pressure afterwards, most grow back larger. Treatment is a course, not a session, and the goal is flatter, softer, paler and comfortable rather than invisible.

Prevention Is Most of the Battle

Controlling active acne on the chest and back before it scars; not squeezing or picking; treating raised scars early, when they are small and responsive; avoiding piercings, tattoos and unnecessary surgery on keloid-prone sites; and telling any doctor or laser technician about a keloid tendency before a procedure — including laser hair removal, where it changes the settings used. If you are unsure whether a mark is raised or flat, the touch test in pimple marks versus acne scars is the place to start.

Where to Get Assessed

Raised and keloidal scars are assessed within our acne scar service at Chennai, Coimbatore, Kannur, Thalassery, Pondicherry and Ooty, with procedural options through surgical dermatology.

Frequently Asked Questions

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

A hypertrophic scar is raised but stays within the original wound and slowly flattens over a year or two. A keloid grows beyond the wound, keeps growing, is often itchy or painful and does not regress on its own. Keloids run in families and are commoner on darker skin.

Can lasers remove keloids?

Not as a primary treatment — aggressive resurfacing injures the scar and stimulates more collagen. Lasers have a targeted role: vascular lasers for redness and itch, and low-energy fractional treatment only once the scar is flat and stable after injections.

What is the best treatment for a keloid?

A course of anti-inflammatory injections directly into the scar, three to four weeks apart, combined as needed with cryotherapy, daily silicone gel or sheets, and pressure for earlobes. Surgery is reserved for large keloids and is always combined with follow-up treatment to stop regrowth.

Do keloids go away on their own?

No. Hypertrophic scars often flatten with time; keloids do not, and usually enlarge. Early treatment, while the keloid is small, gives the best result.

Why do I get keloids on my chest and back after acne?

The chest, shoulders and upper back are high-tension, keloid-prone sites, and inflamed acne there heals with excess collagen on susceptible skin, particularly deeper skin tones. Controlling body acne early and never squeezing it is the most effective prevention.