DERM - Pigmented lesions

Question 1

fitzpatrick type 1

Answer 1

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

Question 2

fitzpatrick type 2

Answer 2

fair skin, blue eyes

Question 3

fitzpatrick type 3

Answer 3

darker white skin

Question 4

fitzpatrick type 4

Answer 4

light brown skin

Question 5

fitzpatrick type 5

Answer 5

brown skin

Question 6

fitzpatrick type 6

Answer 6

dark brown or black skin

Question 7

darker white skin

Answer 7

fitzpatrick type 3

Question 8

brown skin

Answer 8

fitzpatrick type 5

Question 9

fair skin, blue eyes

Answer 9

fitzpatrick type 2

Question 10

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

Answer 10

fitzpatrick type 1

Question 11

dark brown or black skin

Answer 11

fitzpatrick type 6

Question 12

light brown skin

Answer 12

fitzpatrick type 4

Question 13

which fitzpatrick types can still burn?

Answer 13

4-6

Question 14

what is the ABCDE classification?

Answer 14

Asymmetry 
Border 
Color 
Diameter 
Evolving

Question 15

melanocytes are triggered to proliferate by activation of what oncogene?

Answer 15

BRAF

Question 16

how do atypical nevi differ from common nevi?

Answer 16

• begin to appear near puberty instead of childhood

- continue to develop past fourth decade

Question 17

what lesion may be part of AMS?

Answer 17

atypical nevi?

Question 18

are junctional nevi above or below the basement membrane?

Answer 18

above

Question 19

compound or dermal nevus that forms a white border

Answer 19

halo nevus

Question 20

where are halo nevi usually found?

Answer 20

trunk (never on hands / feet)

Question 21

what is responsible for deep pigmentation in halo nevi?

Answer 21

T cells

Question 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

Answer 22

speckled lentiginous nevus (nevus spilus)

Question 23

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

Answer 23

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

adolescent males

Question 24

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

Answer 24

• back of hands

- yes

Question 25

what is idiopathic guttate hypomelanosis?

Answer 25

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

Question 26

what is nevus anemicus?

Answer 26

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

Question 27

ephelides aka:

Answer 27

freckles

Question 28

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

Answer 28

erythema abigne

Question 29

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

Answer 29

UVA

Question 30

what are the causes of sun damaged skin?

Answer 30

DNA mutations (UVB) and ROS (UVA)

Question 31

what is polymorphous light eruption?

Answer 31

• most common light induced skin disease

- burning itching erythema often in V of chest, dorsum of hands / forearms, lower leg