(2) Scale (see figure 4-9). A buildup of dry cells (horny layer), higher than
normal; may be caused by excessive oils or disease processes. Some of the scaling
rashes are psoriasis, dermatitis, and superficial fungus infections.
Figure 4-9. Scale.
(3) Fissure (see figure 4-10). A crack in the epidermis that extends into the
dermis. This commonly occurs from trauma to thickened, dry, or inelastic skin.
Figure 4-10. Fissure.
(4) Erosion (see figure 4-11). A loss of the epidermis but does not extend
into the dermis.
Figure 4-11. Erosion.