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.
Common Types of Scars. You might think that a scar is just a scar, but there are different types. Hypertrophic scars are thick and raised but do not extend beyond the area that was injured. Keloids are thick, red or brown scars that grow beyond the injury.teroid injections are often used to reduce the appearance of keloids and hypertrophic scars. A contracture is an irreversible tightening of the skin. This type of burn scar can give the skin a melted look and can severely limit mobility [source: WebMD ].