Clinical Definitions

Question 1

scale

Answer 1

accumulated fragments of the keratin layer

Question 2

crust

Answer 2

dried exudate e.g. serum

Question 3

lichenified

Answer 3

thickening of the skin with increased skin markings

Question 4

erosion

Answer 4

superficial break in the epidermis

Question 5

ulcer

Answer 5

deeper break in the dermis

Question 6

fissures

Answer 6

linear split in the epidermis

Question 7

scar

Answer 7

normal tissue replaced by fibrous tissue

Question 8

atrophy

Answer 8

loss of epidermis +/- dermis

Question 9

purpura

Answer 9

extravasation of blood that does not blanche (can be raised)

Question 10

petechiae

Answer 10

smaller area of purpura 1-2mm

Question 11

erythema

Answer 11

vascular dilation that blanches on pressure

Question 12

hypopigmentation

Answer 12

lack of melanin

Question 13

hyperpigmentation

Answer 13

increased melanin, hemosiderin or direct chemical staining

Question 14

macule

Answer 14

flat lesion <1cm

Question 15

patch

Answer 15

flat lesion >1cm

Question 16

papule

Answer 16

raised lesion <0.5cm

Question 17

nodule

Answer 17

raised lesion >0.5cm

Question 18

plaque

Answer 18

raised edge with flatter surface >1cm

Question 19

wheal

Answer 19

compressible dermal swelling

Question 20

cyst

Answer 20

nodule containing semi-solid material

Question 21

pustule

Answer 21

pus filled

Question 22

vesicle

Answer 22

fluid-filled <0.5cm

Question 23

bulla

Answer 23

fluid-filled >0.5cm