Definitions Flashcards
1
Q
what should you assess when looking at skin lesions?
A
- distribution (widespread or localised)
- configuration (unilateral, bilateral, symmetrical, circumscribed, discrete)
- morphology
2
Q
define scale
A
accumulated fragments of the keratin layer
3
Q
define crust
A
dried exudate e.g. serum
4
Q
lichenified
A
thickening of the skin with increased markings
5
Q
erosion
A
superficial break in the epidermis
6
Q
ulcer
A
deeper break into the dermis
7
Q
fissure
A
linear split in the epidermis
8
Q
scar
A
normal tissue replaced by fibrous tissue
9
Q
atrophy
A
loss of epidermis +/- dermis
10
Q
purpura
A
extravasation of blood that does not blanche
11
Q
petechiae
A
smaller area of purpura (1-2mm)
12
Q
erythema
A
vascular dilatation that blanches
13
Q
border features
A
well defined
poorly defined
14
Q
hypopigmentation cause
A
lack of melanin
15
Q
hyperpigmentation causes
A
increased melanin
hemosiderin
direct chemical staining
