What influences scar formation?

Age and hormonal influences

The young tend to “over heal” while older people are more prone to secondary wound healing. Puberty and pregnancy are also contributing factors.

 Genetic factors and personal history

People of African and Asian descent, with highly pigmented skin are prone to abnormal scarring, particularly keloid scarring. People with red hair and freckles are at an increased risk of abnormal scarring. Individuals with previous pathological scarring or with a family history of such scarring are also at greater risk.

 Scar location

 Scars over or near muscles that are particularly active, often spread or become more visible than scars formed on less active areas.

 Wound infection rates

 Wound infection increases the likelihood of abnormal scarring.

Incidence of new abnormal scars per year (in the developed world):

  •  All abnormal scars: 100 million
  •  Keloids: 11 million
  • Linear hypertrophic scars: 70 million 
  • Widespread hypertrophic scars (from burns): 4 million

 More about scar types.

Keloid Scar

Keloid Scar