Scar

Definition

A scar is a mark left on the skin or within body tissue where a wound, burn, or sore has not healed completely and fibrous connective tissue has developed. It is the body's natural way of repairing damaged tissue.

Related terms

Collagen:

A protein in connective tissues that plays a critical role in wound healing and is a major component of scars.

Fibroblast:

A type of cell that synthesizes extracellular matrix and collagen, crucial for healing wounds and hence scar formation.

Keloid: An overgrowth of scar tissue that develops around a wound, usually after the wound has healed, often raised and more pronounced than the original scar