- Scars that grow beyond the area of the wound that provoked them (in contrast to hypertrophic scars, which remain localized to the wound area).
- The clinical and histologic distinction between keloids and hypertrophic scars is not always crisp.
- Keloids can sometimes become quite disfiguring when of large size.
- Their etiology is unknown.
- They are significantly more common in blacks.
- Broad, haphazardly arranged, brightly eosinophilic collagen bundles
- Increased fibroblasts interspersed among the collagen bundles
- Usually elevated above the skin surface, often with an atrophic overlying epidermis