Keloids from Acne: Causes, Symptoms, and Treatment

What is Keloids from Acne?

Keloids from acne are raised, thickened scars that form at the site of acne lesions. Unlike typical acne scars, which may fade over time, keloids extend beyond the original wound and can grow larger than the initial acne spot. They are benign (non-cancerous) but can be cosmetically concerning and sometimes painful or itchy.

Keloids occur due to an overproduction of collagen during the healing process. While anyone can develop keloids, they are more common in people with darker skin tones, such as those of African, Asian, or Hispanic descent. Keloids from acne can appear on the face, chest, back, or shoulders—areas commonly affected by acne.

Common Causes

Keloids from acne develop when the skin's healing process is disrupted, leading to excessive scar tissue. Several factors can contribute to their formation:

• Severe acne: Deep, inflammatory acne (such as cysts or nodules) is more likely to cause keloids than mild acne.
• Genetics: A family history of keloids increases the risk of developing them.
• Skin trauma: Picking, squeezing, or popping acne can worsen inflammation and trigger keloid formation.
• Darker skin tones: People with higher levels of melanin are more prone to keloids due to differences in collagen production.
• Hormonal changes: Fluctuations during puberty, pregnancy, or menstruation can increase acne severity and keloid risk.
• Delayed wound healing: Slow healing of acne lesions may lead to excessive scar tissue.
• Infections: Bacterial or fungal infections in acne lesions can worsen inflammation and scarring.
• Previous keloids: If you’ve had keloids before, you’re more likely to develop them again.
• Age: Keloids are more common in people under 30, as collagen production is higher.
• Location of acne: Acne on the chest, back, or shoulders is more likely to keloid than facial acne.

According to the Mayo Clinic, keloids are not contagious or harmful but can be difficult to treat.

Associated Symptoms

Keloids from acne may present with the following symptoms:

• Raised, shiny, or rubbery scars that extend beyond the original acne spot.
• Red, pink, or dark brown coloration (depending on skin tone).
• Itching or tenderness at the site.
• Gradual growth over weeks or months.
• Discomfort or pain if the keloid is large or located over a joint.
• Cosmetic concerns due to their appearance.

Keloids may continue to grow slowly and can become more noticeable over time. They do not regress on their own and often require treatment.

When to See a Doctor

Consult a dermatologist or healthcare provider if you notice:

• Scars that are growing larger or becoming raised.
• Persistent itching, pain, or discomfort.
• Scars that limit movement (if located near joints).
• Signs of infection (increased redness, warmth, or pus).
• Emotional distress due to the appearance of scars.

Early intervention can help manage keloids more effectively. The American Academy of Dermatology (AAD) recommends seeking treatment if keloids are bothersome or affecting your quality of life.

Diagnosis

Doctors typically diagnose keloids through a physical examination. In some cases, additional tests may be needed:

• Visual inspection: A dermatologist will assess the scar’s size, shape, and location.
• Medical history: Discussion of past acne, injuries, or keloids.
• Biopsy (rarely): If the diagnosis is unclear, a small tissue sample may be taken for analysis.

Keloids are usually easy to distinguish from other types of scars (like hypertrophic scars) due to their growth beyond the original wound boundaries.

Treatment Options

Treatment for keloids from acne can be challenging, and results vary. Options include:

Medical Treatments

• Corticosteroid injections: Reduce inflammation and flatten keloids. Often the first-line treatment (NIH).
• Silicone gel or sheets: Applied to the scar to soften and flatten it over time.
• Cryotherapy: Freezing the keloid with liquid nitrogen to reduce its size.
• Laser therapy: Helps reduce redness and flatten the scar.
• Surgical removal: May be combined with other treatments to prevent recurrence.
• Pressure therapy: Special dressings or garments to apply pressure and flatten the scar.
• Radiation therapy: Used in severe cases to prevent keloid regrowth after surgery.

Home and Over-the-Counter Treatments

• Apply silicone scar gels (e.g., Dermatix) to new scars.
• Use sunscreen to prevent darkening of the scar.
• Massage the scar gently with vitamin E oil or cocoa butter (though evidence is limited).
• Avoid picking or irritating the scar.

Note: Home treatments are less effective for established keloids but may help with prevention.

Prevention Tips

Preventing keloids from acne involves minimizing skin trauma and inflammation:

• Avoid picking, squeezing, or popping acne.
• Treat acne early with topical treatments (e.g., benzoyl peroxide, salicylic acid).
• Use gentle skincare products to avoid irritation.
• Apply silicone gel sheets to healing acne lesions.
• Protect skin from sun exposure to reduce pigmentation.
• Consult a dermatologist for severe or cystic acne.

The CDC emphasizes the importance of proper wound care to prevent excessive scarring.

Emergency Warning Signs

While keloids are not typically dangerous, seek immediate medical attention if you experience:

• Signs of infection (increasing pain, redness, swelling, or pus).
• Rapid growth or changes in the scar’s appearance.
• Bleeding or ulceration of the keloid.
• Severe pain or restricted movement.

These symptoms could indicate an infection or another underlying condition requiring urgent care.