In short. Tension, site, how the wound healed and the skin you brought: which of the drivers of a raised scar can still be changed once the scar has formed.
Key points
- The site cannot be changed, and neither can an operation that has already been done.
- What can still be influenced is the load placed on the scar: friction from clothing and seams, sun exposure, scratching, and the movement of a joint that is not being kept mobile.
A raised scar is not a failure of surgery and not a failure of the patient. It is the outcome of a healing process that was pushed harder than it could manage. Four things do the pushing: tension across the wound, the site the wound is in, how the wound healed, and the skin the patient brought to it. Working out which of those is at work is what determines whether anything can still be done, because the four are not equally changeable.
Tension
Tension is the strongest single driver. Skin is under continuous pull, and a wound closed against that pull is held slightly open at a microscopic level, so the healing response keeps laying down collagen. A wound closed along the natural lines of the skin is under less tension than one closed across them, which is why the direction of an incision matters so much.
Site
Some sites are simply under more tension and more movement than others. The chest and the upper back carry a wide, constantly moving sheet of skin. The shoulder, the sternum and the jaw line are similar. A scar that crosses a joint is stretched every time the joint moves, and a scar on the back is stretched every time the patient bends. A scar on the thigh is under relatively little load by comparison.
How the wound healed
This is the part most often forgotten. A wound that became infected, a wound that opened at the surface and was left to close by itself, a collection beneath the wound that had to be drained, a closure that was revised: each adds a period of inflammation, and inflammation is what a raised scar is made of.
What is still changeable, and what is not
The site cannot be changed, and neither can an operation that has already been done. What can still be influenced is the load placed on the scar: friction from clothing and seams, sun exposure, scratching, and the movement of a joint that is not being kept mobile.
The skin the patient brought to it
Skin type is part of the answer. Darker skin is more prone to raised scars, and a personal or family history of keloid, or of wounds that healed with raised scars, is one of the most useful things a patient can report at an assessment, because it changes how ambitious any plan should be. None of this is anybody’s fault, and none of it is a reason to avoid an operation that is needed. It is a reason to plan the scar and not only the wound.
Have a raised scar assessed promptly if
- It is still enlarging several months after the operation, or it has crossed the original wound edge.
- The wound has opened, or a gap has appeared along the scar — seek care the same day.
- It is tightening across a joint, or pulling an eyelid or a lip out of position.
Frequently asked questions
Why did my scar become raised when the operation went well?
Because the operation is only one of four drivers. Tension across the wound, the site it sits in, how the wound healed afterwards and the patient’s own skin all push a scar upward. An operation performed exactly as intended can still leave a raised scar, and that is not a failure by the surgeon or by the patient.
Does where the scar is change how it heals?
Considerably. The chest, the upper back, the shoulder, the sternum and the jaw carry a wide, constantly moving sheet of skin under continuous tension, and a scar across a joint is stretched every time the joint moves. A scar on the thigh is under far less load, which is why two identical operations can leave two very different scars.
Can a raised scar be prevented next time?
Sometimes the load can be reduced: an incision placed along the lines of least tension, a closure planned for it, and after the operation the measures used during maturation. Where a patient has a personal or family history of raised scars, that history changes how ambitious any plan should be, and it is worth reporting before an operation rather than after.
Risks & Limitations
- A scar is permanent. Maturation changes its colour, height and firmness over twelve to eighteen months, not its existence.
- A raised scar is usually uncomfortable rather than dangerous, which is why the small number of findings that are dangerous are named individually.
- Maturation is slow, and a scar often looks worse at six weeks than it will at six months; judging it early means judging a moving target.
- Treatment can improve a scar but cannot remove it, and a further operation trades one scar for another arrangement rather than undoing the first.
- A keloid grows beyond the original wound, does not settle on its own, and tends to recur after it is removed.
When to Seek Care
- A scar growing beyond the edges of the original wound, or a lump within it that is enlarging — have it assessed within days.
- Redness with heat, swelling or discharge in the scar, or a fever — seek care the same day.
- A wound that has opened, or a gap appearing along the scar — seek care the same day.
- A scar tightening across a joint, or pulling on an eyelid or a lip — prompt assessment.
- A scar that has started to bleed or ulcerate — urgent assessment.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — guidance on scar revision and surgical wound care
- National Institute for Health and Care Excellence (NICE, UK) — guidance on surgical scars and wound management
- Cochrane Library — systematic reviews of scar management
- American Academy of Dermatology (AAD) — guidance on keloids and hypertrophic scars
- Chinese Medical Association Plastic Surgery Branch — clinical guidance
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.