Hypertrophic and Keloid Scars: How to Tell the Difference

Scars are a natural part of the healing process, but not all scars are the same. Two common types of abnormal scarring are hypertrophic and keloid scars. While both can cause discomfort and aesthetic concerns, they differ in appearance, behavior, and treatment. Understanding these differences is crucial in determining the best approach for scar management and treatment.

Key Characteristics of Hypertrophic Scars

Hypertrophic scars are raised, thickened scars that develop at the site of an injury, surgery, or other skin trauma. These scars are characterized by an overproduction of collagen during the healing process, leading to a scar that is elevated above the surrounding skin but remains confined to the boundaries of the original wound. Characteristics include:

• Appearance: Hypertrophic scars are typically red or pink and raised above the skin level. They may feel firm to the touch and can be itchy or uncomfortable.
• Growth: Unlike keloid scars, hypertrophic scars do not extend beyond the edges of the original wound. They usually develop within weeks of the injury and can continue to thicken for several months.
• Over Time: Hypertrophic scars may gradually improve over time. They can flatten and fade to a lighter color, although they may remain slightly raised compared to the surrounding skin.
• Causes: These scars often result from injuries, surgical incisions, burns, or other trauma, especially in areas of the body where there is tension on the wound, such as the shoulders, chest, or knees.

Key Characteristics of Keloid Scars

Keloid scars are a more severe form of scarring that occurs when the body’s healing process goes into overdrive, leading to excessive collagen production. Unlike hypertrophic scars, keloid scars grow beyond the boundaries of the original wound and can continue to enlarge over time.

• Appearance: Keloid scars are typically raised, shiny, and may be red, purple, or darker than the surrounding skin. They are often lumpy or ridged and can vary significantly in size.
• Growth: Keloid scars extend beyond the original wound, spreading into surrounding healthy tissue. They can continue to grow and thicken for months or even years after the initial injury.
• Over Time: Unlike hypertrophic scars, keloid scars do not improve over time without treatment. They may become painful, itchy, or tender and can cause significant discomfort.
• Causes: Keloid scars can develop from even minor skin injuries such as piercings, acne, or insect bites. They are more common in individuals with darker skin tones and can occur anywhere on the body, though they are most frequently found on the chest, shoulders, earlobes, and cheeks.

How to Tell the Difference

Distinguishing between hypertrophic and keloid scars is essential for determining the appropriate treatment strategy. Here are some key factors to consider:

• Scar Boundaries: The most significant difference is that hypertrophic scars stay within the wound’s boundaries, while keloid scars grow beyond them.
• Growth Pattern: Hypertrophic scars usually stabilize and may flatten over time, whereas keloid scars can continue to grow and spread.
• Location and Cause: Consider the location and cause of the scar. Keloids are more common in certain areas of the body and among individuals with a genetic predisposition.

Treating hypertrophic and keloid scars requires different approaches. Hypertrophic scars may respond well to silicone sheets, pressure therapy, or corticosteroid injections. Keloid scars often require more aggressive treatment, including steroid injections, laser therapy, or surgical removal, often combined with other therapies to prevent recurrence.

At the International Keloid & Scar Treatment Center, we specialize in diagnosing and treating all types of scars, including hypertrophic and keloid scars. Our experienced team uses advanced techniques and personalized care plans to help you achieve the best possible outcomes. If you’re struggling with scarring, contact us today at our facility in Orlando, FL, to explore your treatment options and take the first step toward smoother, healthier skin.