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.
Types of Acne Scars. As the wound heals, the body sometimes produces too much collagen, which creates a mass of raised tissue on the skin's surface. This type of scarring is called hypertrophic, or keloid, scarring. More commonly, acne causes atrophic, or depressed, scars. Atrophic scars develop when there is a loss of tissue. Ice pick and boxcar scars are two examples of atrophic scars. Inflammation is the single greatest gauge of scar development. The greater the inflammation on the skin, the more likely scarring is to occur.