(5) Ulcer (see figure 4-12). An excavation into the dermis or deeper, always
results in a scar.
Figure 4-12. Ulcer.
Scar. The result of healing after destruction of some of the dermis.
(7) Keloid. A sharply elevated, irregular-shaped, progressively enlarging
scar caused by the formation of excessive amounts of collagen in the corium during
connective tissue repair.
c. Special Lesions.
(1) Sebaceous cyst. A blocked sebaceous duct, where by the gland
continues with its activity.
Folliculitis. An inflammation or infection of the hair follicles.
(3) Boil (furuncle). A well-localized staph infection of the hair follicle,
epidermis, and/or dermis.
Abscess. A localized collection of pus.
Petechiae. A ruptured capillary (micro-sized bruise).
Ecchymosis. A ruptured vein (large bruise).
(7) Maceration. A softening of solid tissue by soaking; the tissue turns white
and breaks down easily.