A keloid is a type of scar (fibrotic tissue) that forms when the fibrous components of the skin excessively proliferate during the healing process of an injury , resulting in a normal skin, brownish or red, raised lesion.
There are two main types: “true keloids,” which are chronic and difficult to treat, and “hypertrophic scars,” which respond well to treatment and gradually flatten over time. Although these two are often collectively referred to as “keloids,” they are fundamentally different conditions.