Keloid Treatment: Evidence-Based Options and Management Strategies

Keloids are benign fibroproliferative scars that extend beyond the original wound margins. Treatment is challenging due to high recurrence rates; combination therapy yields best results.

Conservative / Non-Invasive

• Silicone gel sheeting: First-line; 12–24 hrs/day for 3–6 months. Flattens, softens, reduces erythema. Mechanism: occlusion, hydration, cytokine modulation.
• Pressure therapy: Custom garments (15–25 mmHg) 23 hrs/day for 6–12 months. Best for earlobes, trunk. Improves collagen alignment.
• Topical agents:
  • Corticosteroids (clobetasol, fluticasone) — anti-inflammatory.
  • Imiquimod 5% cream — post-excision; induces IFN-α, TNF-α, apoptosis.
  • Retinoids (tretinoin) — modulate collagen.
  • Onion extract, vitamin E — limited evidence.

Invasive / Procedural

• Intralesional corticosteroids: Triamcinolone 10–40 mg/mL q3–4 weeks. Gold standard adjuvant. Reduces volume, symptoms. Side effects: atrophy, telangiectasia, hypopigmentation.
• Cryotherapy: Liquid nitrogen freeze-thaw cycles. Good for small keloids; hypopigmentation risk in dark skin.
• Surgical excision: Never alone (recurrence 50–100%). Always combined with adjuvant (steroids, radiation, pressure).
• Radiation therapy: Post-excision (within 24–48 hrs); electron beam or brachytherapy. High control rates (80–90%); long-term carcinogenesis concern (low).
• Laser therapy: Pulsed dye laser (585–595 nm) — reduces vascularity, erythema, height. Fractional CO₂ — remodels collagen. Often combined with steroids.
• Other: 5-FU injections, bleomycin, interferon, botulinum toxin (emerging).

Algorithm

1. New/small keloid → silicone ± topical steroid ± pressure.
2. Symptomatic/large → intralesional steroids ± laser.
3. Refractory → excision + adjuvant (steroids ± radiation).
4. Earlobe keloids → excision + pressure earring ± radiation.

Key Point

Early intervention improves outcomes. Referral to dermatologist/plastic surgeon with keloid expertise is recommended.