Scars
Hypertrophic Scars
WHAT IS IT
A raised scar within the wound's borders
HOW COMMON
Very common after wounds or surgery
CONTAGIOUS?
No — you cannot catch it or spread it
CURABLE?
Manageable; often improves over time
What Is It?
A hypertrophic scar is a raised, thickened scar that stays within the boundaries of the original wound (unlike a keloid, which grows beyond it). It's a common result of healing after cuts, burns, or surgery. These scars can be red, firm, and itchy at first, and often flatten and fade over months to a couple of years.
Signs & Symptoms
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A raised, firm scar within the original wound's edges
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Red or pink early on, fading over time
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Itching or tenderness, especially while active
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More common in areas of tension or movement
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Gradual flattening over months to years
Why Does It Happen?
Hypertrophic scars form when the body produces extra collagen during wound healing, especially in wounds under tension, that heal slowly, or that become infected. Areas of movement or stretch (chest, shoulders, joints) are more prone. Unlike keloids, they respect the wound's borders and tend to improve with time. They are NOT contagious.
Treatment Options
Many hypertrophic scars improve on their own, and early scar care speeds and improves the result. Treatments soften, flatten, and relieve symptoms.
SILICONE & PRESSURE
Silicone sheets or gel and pressure to flatten and soften the scar.
STEROID INJECTIONS
Reduce thickness, itch, and redness in raised scars.
LASER THERAPY
Improves color and texture of the scar.
TIME & MASSAGE
Many flatten over 1–2 years; gentle massage may help.
Tips for Managing It at Home
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Start silicone gel/sheets on new scars once the wound has closed
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Protect scars from the sun to prevent darkening
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Be patient — improvement is gradual over many months
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Keep wounds clean and avoid tension while healing
When to Call Your Provider
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A scar that grows beyond the wound (possible keloid)
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A scar limiting movement or function
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Persistent itch, pain, or rapid thickening
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Signs of infection in a healing wound
Sources & further reading
The information in this handout is based on general dermatology guidance from the reputable organizations below. These links are provided for patients who wish to read more from trusted sources.
DermNet. Hypertrophic and Keloid Scars. https://dermnetnz.org/topics/keloids-and-hypertrophic-scars
MSD/Merck Manual. Keloids. https://www.msdmanuals.com/professional/dermatologic-disorders/benign-skin-tumors-growths-and-vascular-lesions/keloids
Cleveland Clinic. Hypertrophic Scars. https://my.clevelandclinic.org/health/diseases/23325-hypertrophic-scar
This handout is for general education and does not replace advice from your own provider. Always follow your provider’s specific instructions.
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