A patient shows you an area on his right hand where a loss of epidermal tissue exposes the dermis. You recognize this lesion as a(n)
a. excoriation. c. keloid.
b. wheal. d. scar.
A
Excoriation, an example of a secondary lesion, is described as the loss of epidermal layers exposing the dermis, such as an abrasion. A wheal is a primary lesion described as localized edema in the epidermis, causing an irregular elevation that can be red or pale such as an insect bite, hives, and angioedema. A keloid is an enlargement of a scar past the wound edges resulting from excess collagen formation (more prevalent in dark-skinned individuals). It is a secondary lesion.
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