Skin

Keloids and Hypertrophic Scars

Keloids are raised overgrowths of scar tissue that occur at the site of a skin injury. Unlike hypertrophic scars, keloids grow beyond the original wound boundaries and do not regress over time. They result from an overproduction of collagen during wound healing. Keloids can cause discomfort and cosmetic concerns.

5

Symptoms

3

Causes

6

Treatments

2

Prevention

Condition Overview

Understand key symptoms, causes, diagnosis options, and treatment pathways for Keloids and Hypertrophic Scars. This overview is intended for patient awareness and should be followed by specialist consultation.

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Symptoms

  • Thick, raised scar
  • Scar extends beyond original wound
  • Itching, pain, or tenderness
  • Firm, rubbery texture
  • Dark or pink discoloration

Causes

  • Abnormal wound healing with excessive collagen production
  • Triggered by skin injury: surgery, acne, piercings, burns, vaccination sites
  • Genetic predisposition

Diagnosis

  • Physical examination
  • Biopsy if diagnosis uncertain

Treatment

  • Corticosteroid injections (most common)
  • Silicone gel sheets
  • Cryotherapy
  • Laser therapy
  • Radiation (after excision)
  • Surgical removal (high recurrence risk alone)

Risk Factors

  • Dark skin (African, Hispanic, Asian descent)
  • Age 10–30
  • Family history
  • Genetic predisposition

Prevention

  • Avoid unnecessary skin procedures in predisposed individuals
  • Treat wounds promptly and properly

Prevalence

Keloids occur in about 10% of people; much higher rates (up to 16%) in those of African or Asian descent.