Clinical Features:

• Raised, exuberant scars that remain localized to the wound area, in contrast to keloids, which grow beyond the wound area
• The clinical and histologic distinction between hypertrophic scars and keloids is not always crisp.

Histologic Features:

• Dense collagen bundles oriented parallel to the epidermal surface
• Marked increase in fibroblasts in the area of the hypertrophic collagen 
• The scar shows minimal to no elevation above the skin surface (in contrast to keloids).