DERM - Pigmented lesions Flashcards Preview

Year 2 Specialty Medicine > DERM - Pigmented lesions > Flashcards

Flashcards in DERM - Pigmented lesions Deck (31):
1

fitzpatrick type 1

pale white skin, blue / green eyes, blond / red hair

2

fitzpatrick type 2

fair skin, blue eyes

3

fitzpatrick type 3

darker white skin

4

fitzpatrick type 4

light brown skin

5

fitzpatrick type 5

brown skin

6

fitzpatrick type 6

dark brown or black skin

7

darker white skin

fitzpatrick type 3

8

brown skin

fitzpatrick type 5

9

fair skin, blue eyes

fitzpatrick type 2

10

pale white skin, blue / green eyes, blond / red hair

fitzpatrick type 1

11

dark brown or black skin

fitzpatrick type 6

12

light brown skin

fitzpatrick type 4

13

which fitzpatrick types can still burn?

4-6

14

what is the ABCDE classification?

Asymmetry
Border
Color
Diameter
Evolving

15

melanocytes are triggered to proliferate by activation of what oncogene?

BRAF

16

how do atypical nevi differ from common nevi?

- begin to appear near puberty instead of childhood
- continue to develop past fourth decade

17

what lesion may be part of AMS?

atypical nevi?

18

are junctional nevi above or below the basement membrane?

above

19

compound or dermal nevus that forms a white border

halo nevus

20

where are halo nevi usually found?

trunk (never on hands / feet)

21

what is responsible for deep pigmentation in halo nevi?

T cells

22

- cafe au lait appearance with raised black dots in middle
- hairless, oval or irregularly shaped brown lesion, dotted with darker brown to black spots

speckled lentiginous nevus (nevus spilus)

23

where are beckers nevi found? what is the typically age group?

- shoulder
- submammary area
- upper / lower back
- rarely on lower limbs

adolescent males

24

where are blue nevi usually seen? can they be melanotic?

- back of hands
- yes

25

what is idiopathic guttate hypomelanosis?

- white spots on arms and legs
- sharply demarcated borders
- elderly
- melanin absent in basal keratinocytes

26

what is nevus anemicus?

- white, macular, ill defined border surrounded by smaller lesions
- congenital, localized, pharmacological cutaneous anomaly
- usually on trunk

27

ephelides aka:

freckles

28

distinctive cutaneous eruption with reticular pattern related to chronic exposure to heat from wood stove, fireplace, electric blanket, hot water bottle, laptop

erythema abigne

29

which UV ray causes CT changes seen in photoaging, photocarcinogenesis, and immunosuppression?

UVA

30

what are the causes of sun damaged skin?

DNA mutations (UVB) and ROS (UVA)

31

what is polymorphous light eruption?

- most common light induced skin disease
- burning itching erythema often in V of chest, dorsum of hands / forearms, lower leg