DERM - Pigmented lesions Flashcards

(31 cards)

1
Q

fitzpatrick type 1

A

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

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2
Q

fitzpatrick type 2

A

fair skin, blue eyes

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3
Q

fitzpatrick type 3

A

darker white skin

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4
Q

fitzpatrick type 4

A

light brown skin

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5
Q

fitzpatrick type 5

A

brown skin

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6
Q

fitzpatrick type 6

A

dark brown or black skin

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7
Q

darker white skin

A

fitzpatrick type 3

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8
Q

brown skin

A

fitzpatrick type 5

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9
Q

fair skin, blue eyes

A

fitzpatrick type 2

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10
Q

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

A

fitzpatrick type 1

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11
Q

dark brown or black skin

A

fitzpatrick type 6

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12
Q

light brown skin

A

fitzpatrick type 4

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13
Q

which fitzpatrick types can still burn?

A

4-6

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14
Q

what is the ABCDE classification?

A
Asymmetry 
Border 
Color 
Diameter 
Evolving
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15
Q

melanocytes are triggered to proliferate by activation of what oncogene?

A

BRAF

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16
Q

how do atypical nevi differ from common nevi?

A
  • begin to appear near puberty instead of childhood

- continue to develop past fourth decade

17
Q

what lesion may be part of AMS?

A

atypical nevi?

18
Q

are junctional nevi above or below the basement membrane?

19
Q

compound or dermal nevus that forms a white border

20
Q

where are halo nevi usually found?

A

trunk (never on hands / feet)

21
Q

what is responsible for deep pigmentation in halo nevi?

22
Q
  • cafe au lait appearance with raised black dots in middle

- hairless, oval or irregularly shaped brown lesion, dotted with darker brown to black spots

A

speckled lentiginous nevus (nevus spilus)

23
Q

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

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

adolescent males

24
Q

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

A
  • 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