Final answer:
A hypertrophic scar resulting from excess collagen during skin healing is known as a keloid.
Step-by-step explanation:
A hypertrophic scar resulting from excess collagen produced during skin healing is called a keloid. Keloids are characterized by an overgrowth of scar tissue that extends beyond the borders of the original wound. They can be raised, thickened, and may have a shiny or smooth appearance.
Learn more about Hypertrophic scar and excess collagen