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Y2 Dermatology > Keywords > Flashcards

Flashcards in Keywords Deck (28)
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1

Hyperkeratosis

increased thickness of the keratin layer

2

Parakeratosis

persistence of nuclei in the keratin layer

3

Acanthosis

increased thickness of the epidermis

4

Papillomatosis

irregular epithelial thickening

5

Spongiosis

oedema between the keratinocytes

6

macule

flat, non-palpable change in skin colour, <0.5cm

7

patch

flat, non-palpable change in skin colour >0.5cm

8

vesicle

fluid within upper layer of skin <0.5cm

9

blister

fluid within the upper layers of the skin >0.5cm

10

bulla

large, fluid filled lesion below the epidermis >10cm

11

pustule

visible collection of pus in subcutis

12

papule

raised area <0.5cm

13

plaque

raised area >2cm

14

nodule

mass or lump >0.5cm

15

wheal

dermal oedema

16

callus

hyperplastic epidermis

17

erosion

partial epidermal loss, heals without scarring

18

fissure

linear crack

19

ulcer

full thickness skin loss

20

atrophy

thinning of the epidermis

21

scale

a small thin piece of horny epithelium

22

excoriation

scratch mark

23

crust

scab - dried exudate of blood/plasma or tissue fluid

24

lichenification

thickening of epidermis with exaggerated skin markings - bark like

25

telangiectasia

easily visible superficial blood vessels

26

purpura

rash cause by blood in the skin

27

erythema

reddening due to local vasodilation

28

spider naevi

single telangiectasia arteriole in the skin