Keloids: Causes & Why Some Scars Overgrow

Have you ever noticed how some people develop thick, raised scars that seem to grow beyond the original wound? These aren’t ordinary scars – they’re called keloids, and they represent your body’s healing process gone into overdrive. 

Disclaimer: This is to be used only as an educational piece. Individuals should not use it to self-diagnose a skin condition or problem.

Understanding keloids helps us appreciate both the remarkable complexity of wound healing and why some people are more prone to these persistent skin growths. In this article, we’ll break down the causes of keloids and explain why some scars overgrow.

What Exactly Are Keloids?

A keloid is an abnormal overgrowth of scar tissue. Instead of just healing the wound, your skin continues to grow and form extra tissue, creating a raised, often thickened scar. These scars can extend beyond the original injury site and are usually shiny and smooth. While they’re harmless in most cases, keloids can be itchy, painful, or even restrict movement, depending on where they develop.

Why Do Some Scars Turn Into Keloids?

The exact cause of keloids isn’t fully understood, but we know a few things that contribute to their development.

1. Genetics Play a Role

If you have a family history of keloids, you’re more likely to develop them yourself. This suggests that genetic factors influence how your body reacts to injury. Some people’s skin might just have a stronger tendency to form these excessive scars.

2. Excessive Collagen Production

When your skin is injured, your body produces collagen to help heal the wound. In the case of keloids, your body keeps producing too much collagen, causing the scar tissue to grow larger than necessary.

3. Types of Injuries Matter

Certain types of injuries, especially deep cuts or burns, are more likely to result in keloids. Even minor wounds like piercings or surgical incisions can turn into keloids in some individuals.

4. Skin Type

Keloids are more common in darker skin tones, although they can affect anyone. People with African, Asian, or Hispanic backgrounds may be more prone to developing them due to the increased melanin in their skin.

5. Age

Keloids are more likely to develop in younger people, especially those between the ages of 10 and 30. As we age, the body’s ability to produce excess collagen decreases, which may be why keloids tend to become less common later in life.

6. Infection or Inflammation

If a wound becomes infected or experiences prolonged inflammation, it can increase the risk of developing a keloid. This is because inflammation encourages the body to produce more collagen as part of the healing process.

Keloids vs. Regular Scars: What’s the Difference?

While regular scars are a natural part of healing, keloids are excessive. Here’s how they compare:

  • Size: Regular scars are confined to the area of the wound, while keloids can extend well beyond the injury.
  • Shape: Regular scars are usually flat or slightly raised. Keloids, on the other hand, are typically raised and shiny, often appearing rounded or dome-like.
  • Color: Keloids can be darker than the surrounding skin and may change color over time, whereas regular scars tend to fade and blend with your skin tone.
  • Symptoms: Keloids can be itchy or painful, whereas most regular scars don’t cause discomfort.

Can Keloids Be Prevented?

While you can’t entirely avoid getting a keloid if you’re genetically prone, there are a few strategies that may reduce the risk:

  • Treat Wounds Early: Clean and cover wounds promptly to prevent infection and excessive scarring.
  • Avoid Picking at Scabs: Picking at scabs or causing unnecessary trauma to a healing wound can increase the risk of keloid formation.
  • Use Silicone Sheets or Gels: Some studies suggest that silicone-based products can help prevent keloids from forming by hydrating the scar tissue.
  • Steroid Injections: Doctors may recommend steroid treatments during the healing process to prevent excessive scar tissue from forming.

Conclusion

Understanding keloids – what they are, why they develop, and how they can be managed – empowers people to make informed decisions about their care. While keloids can be frustrating and challenging to treat, knowledge about their underlying mechanisms helps both patients and healthcare providers approach treatment more strategically.

Keloid development isn’t a reflection of poor wound care or personal hygiene failure. It’s a complex biological process influenced by genetics, environment, and individual factors largely beyond your control. With proper understanding and appropriate care, most people with keloids can find ways to manage them effectively and maintain a good quality of life.

If you notice any keloids, contact Dr. Abdiaziz Dermatology Clinic promptly. Early detection and treatment can help slow its progression and improve management.

DISCLAIMER: Our articles are for general educational purposes; don’t start any skin treatment or procedure without consulting a certified dermatologist. 

Dr. Abdiaziz Mohamed

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