Dermatology: Layers of the Skin/Common Terms Used to Describe Skin Lesion

Question 1

what are the 3 layers of the skin?

Answer 1

epidermis, dermis, and subcutaneous tissue

Question 2

define macule vs patch

Answer 2

-a flat lesion that differs in color from surrounding skin (1cm

Question 3

define papule vs plaque

Answer 3

papule: an elevated solid lesion that is generally small 5mm in diameter

Question 4

define cyst

Answer 4

an epithelial lined sac contained fluid or semisoiid material

Question 5

define bulla vs vesicle

Answer 5

vesicle: a fluid-filled vry small 5mm

Question 6

define wheal (or hive)

Answer 6

an area of localized edema that follows vascular leakage and usually disappears within hours

Question 7

define erosion vs ulcer

Answer 7

Erosion: a circumscribed, superficial depression resulting from the loss of some or all of the epidermis
ulcer: a deeper depression resulting from destruction of the epidermis and upper dermins

Question 8

define scale

Answer 8

abnormal shedding or accumulation of stratum corneum inflakes

Question 9

define crust

Answer 9

a hardened deposit of dried serum, blood, or purulent exudates

Question 10

define lichenifcation

Answer 10

thickening and hardening of the skin with accentuation of normal skin markings

Question 11

define scar

Answer 11

a healing defect of the dermis (the epidermis alone heals without a scar)