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Flashcards in Terms Deck (24):
1

What are comedones?

dilated hair follicle full of keritinaceous material i.e. a balckhead;

can be primary or secondary lesion

2

Define a macule

flat lesion <1 cm in diameter with pigment change

primary lesion

3

Patch

same as a macule but >1 cm in diameter

primary lesion

4

Papule

a cluster of coalescing papules, raised, often with a flat top

primary lesion

5

Pustule

Elevation of skin with an accumulation of pus

primary lesion

6

Vesicle

<1cm elevation of skin with clear fluid

primary lesion

7

Bulla

same as a vesicle but >1 cm.

primary lesion

8

Wheal

raised dermal lesion consisting of dermal edema

primary lesion

9

nodule

elevation of skin > 1 cm; Can also be a tumor

primary lesion

10

Erythema

redness of skin

primary lesion

11

Epidermal collarette

ring of lifting keratin in centripetal manner

secondary lesion

12

Erosion

defect in epidermis (ulcer)

Secondary lesion

13

Lichinification

thickening of epidermis due to chronic trauma and inflammation

secondary lesion

14

Scar

an area of fibrous tissue replacing damaged dermis

secondary lesion

15

Alopecia

lack of hair

primary or secondary lesion

16

scale

loose fragments of stratum corneum

primary or secondary lesion

17

follicular cast

plug of keratinaceous debris

primary or secondary lesion

18

Crust

dried exudate and cells adhered to the skin

primary or secondary lesion

19

Hyperpigmentation

increase in pigment of the skin *can be an indication of chronicity.

primary or secondary lesion

20

hypopigmentation

decrease in pigmentation of the skin

primary or secondary lesion

21

leukoderma

white skin

primary or secondary lesion

22

leukotrichia

white hair

primary or secondary lesion

23

fissure

long narrow opening made by cracking or splitting of the skin

secondary lesion

24

Trichoscopy

hair plucks for cytological evaluation