Which of the following choices correctly describes a characteristic of keloids?

Keloids are characterized by their firm and raised structure, which is specifically due to an overproduction of collagen during the healing process. This excessive collagen can create a prominence that extends beyond the original site of injury, leading to the typical appearance of keloids. The claw-like margins are a notable feature, as they can appear jagged or irregular, giving the keloid its distinct growth pattern that often looks different from the surrounding skin.

This understanding of keloids underscores their unique nature in comparison to other types of scars. Unlike flat and smooth scars, keloids protrude from the skin surface. They also differ from soft and irregular scars, which may not have the tight, firm consistency associated with keloids. Furthermore, keloids are elevated above the skin surface rather than being non-elevated and pale. These characteristics make keloids a specific type of abnormal scar that requires different considerations in treatment and management compared to standard scarring.