Keloid Scar – Hypertrophic Scar

Background

A keloid scar is a type of raised hypertrophic scar that forms when the body produces too much collagen during the healing process after an injury, surgery, or even something minor like a piercing or acne. A keloid scar is a type of hypertrophic scar. Instead of staying flat and blending in with the skin over time, a keloid continues to grow and becomes thick, hard, and often larger than the original wound. It can be shiny, have a smooth surface, and may be pink, red, or darker than the surrounding skin. Keloids are usually harmless but can be itchy or uncomfortable, and they don’t go away on their own without treatment.

Risk Factors for Developing a Keloid or Hypertrophic Scar

Certain factors can increase the risk of developing keloid or hypertrophic scars including:

• Genetics: People with a family history of keloids are more likely to develop them, as the tendency to form these scars can run in families.
• Skin Type: Individuals with darker skin tones, particularly those of African, Asian, or Hispanic descent, are at a higher risk for keloid formation.
• Age: Young adults and teenagers are more prone to keloids, especially during periods of rapid growth or hormonal changes.
• Type of Injury: Keloids can develop after surgeries, cuts, piercings, burns, or even acne. Injuries that are deeper or more extensive are more likely to lead to keloid formation.
• Location of the Injury: Certain areas of the body, like the chest, shoulders, and earlobes, are more prone to developing keloids.
• Hormonal Factors: Changes in hormones, such as those that occur during pregnancy, may also increase the risk of keloids.

Understanding these risk factors can help individuals take preventive measures and seek appropriate care if they have a history of keloid formation.

Prevention of Hypertrophic Scars

There are several ways to prevent or minimize the occurrence of keloid and hypertrophic scars including:

• Careful Wound Management: Properly cleaning and caring for cuts, burns, or surgical wounds can help minimize scar formation. Using sterile dressings and keeping the wound moist can be beneficial.
• Avoiding Unnecessary Procedures: Limit piercings, tattoos, or surgeries in areas prone to keloid formation, especially if you have a history of keloids.
• Use of Silicone Gel or Sheets: Applying silicone gel or sheets to healing wounds may help flatten and soften scars, reducing the risk of keloid formation.
• Pressure Therapy: For individuals at high risk, wearing pressure garments after surgery or injury may help prevent keloids by applying consistent pressure to the area.
• Injections of Corticosteroids: Injecting corticosteroids into the wound site right after an injury or surgery can help reduce inflammation and the risk of keloid formation.

Treatment of Keloid or Hypertrophic Scars

There are a variety of treatment strategies that can help minimize the effects of keloid or hypertrophic scars including:

• Corticosteroid Injections: For existing keloids and hypertrophic scars, corticosteroid injections can help flatten and reduce redness in the scar tissue.
• Surgery: Surgical removal of keloids may be an option, but there is a risk of recurrence, so it’s often combined with other treatments like corticosteroid injections.
• Cryotherapy: Freezing the keloid with liquid nitrogen can help reduce its size and appearance.
• Laser Therapy: Laser treatments can help flatten and improve the color of keloids and hypertrophic scars, making them less noticeable.
• Radiation Therapy: In some cases, low-dose radiation can be used after surgical removal of a keloid to prevent recurrence.
• Chemical Peels or Dermabrasion: These procedures can help improve the appearance of scars by removing the top layers of skin.

Consulting with a dermatologist or a healthcare provider is essential for choosing the best prevention or treatment option based on individual circumstances.

Edited by Stephen Pinney MD October 14th, 2024