These mites are largely parasitic and consume blood, skin and keratin. Dust mites, which feed mostly on dead skin and hair shed from humans instead of consuming them from the organism directly, evolved from these parasitic ancestors.
Hypertrophic scar (4 months after incident) A hypertrophic scar is a cutaneous condition characterized by deposits of excessive amounts of collagen which gives rise to a raised scar, but not to the degree observed with keloids. Like keloids, they form most often at the sites of pimples, body piercings, cuts and burns. They often contain nerves and blood vessels.
1 This type of scarring can also happen when the body produces so much scar tissue in one area that it prevents new cells from growing where the wound took place. 2  Hypertrophic scars: These are usually red or purple and are slightly raised above the skin. 3  They tend to fade and get flat over time.