The boundary is the clearest distinction
Hypertrophic scars and keloids both involve excess scar tissue. The simplest textbook distinction is where that tissue grows: a hypertrophic scar remains within the original wound, while a keloid extends beyond its edges.
Their timing and natural course may also differ. Hypertrophic scars often appear relatively soon after an injury and can gradually settle. Keloids can continue growing and may return after treatment.
Why the difference matters
Treatment choices depend on the scar, its location, symptoms, history and the person’s skin. Reviews describe management as potentially involving several approaches rather than one universal treatment.
That is also why a consumer scar-care product should not promise to remove a keloid. Silicone can be one non-invasive part of scar management, but assessment and treatment planning belong with a qualified professional.
When to ask for help
Consider speaking with a GP, dermatologist or scar specialist if a raised scar is growing beyond the original wound, is painful or itchy, restricts movement, or is affecting your wellbeing.
For routine silicone tape use, wait until the skin is completely closed and healed, and stop if irritation occurs.
Sources
- Hypertrophic scars and keloids: Overview of the evidence and practical guide for differentiating between these abnormal scars. Experimental Dermatology via PubMed (2021).
- Keloids and Hypertrophic Scars. Facial Plastic Surgery Clinics of North America via PubMed (2023).
- Silicone for scars: patient information. St George’s University Hospitals NHS Foundation Trust (2023).