Dermatology II Flashcards Preview

Jason's MD2 Core Conditions > Dermatology II > Flashcards

Flashcards in Dermatology II Deck (57)
1

where does atopic eczema usually occur? look like?

ill defined
scaly
patches
in flexures

2

what is filaggrin mutation?

genetic reduced skin barrier function, more likely atopic eczema

3

atopic eczema happens where on infant more likely?

face

4

what is lichenification?

chronic rubbing/scratching of atopic eczema

5

what is discoid eczema?

in annular discs,
mimics psoriasis and tinea

6

discoid eczema responds to?

potent topical steroids

7

what is asteatotic eczema? where? who? when

front of legs of elderly in winter

8

how does pompholyx/vesicular hand/foot eczema happen?

excessive washing/sweating
avoid soaps

9

what is diffuse erythrodermic eczema?

>90% body eczema
treat with systemic immunosuppression

10

eczema has golden crust around it, what is it probably?

staph aureus colonized the eczema

11

treatments for staph aureus in eczema?

chlorine bath
systemic antibiotics

12

eczema herpeticum is? looks like

secondary infection by HSV
punched out erosions

13

why is eczema herpeticum medical emergency? how treat?

corneal scarring
systemic antivirals

14

how to diagnose contact dermatitis?

patch testing

15

how to diagnose contact dermatitis?

patch testing

16

what kind of phototherapy for atopic eczema?

UVB 311nm
immunodesensitization

17

atopic eczema immunosuppression options?

short: oral prednisolone
med-long: methotrexate, azathioprine etc.

18

erythematous, scaly well demarcated plaques most likely dx?

chronic plaque psoriasis

19

2 peaks of onset for psoriasis?

20s
50s

20

where get rash in psoriasis?

extensor rash

21

psoriasis appearance classical?

symmetrical
extensor surface
scaly
well demarcated
erythematous

22

most common cause of eruption on penis is?

genital psoriasis

23

nail psoriasis can cause what to nail?

onycholysis

24

what is guttate psoriasis? who gets it? trigger?

'raindrop' psoriasis
kids
triggered 1-2/52 post strep infections, URTI

25

how to treat guttate psoriasis?

phototherapy

26

pustular psoriasis dangerous?

yes. medical emergency
systemic fever, chills, loss of barrier function

27

psoriatic arthritis affects how many % of psoriasis patients?

10%

28

systemic Rx of psoriatic arthritis

methotrexate, cyclosporin A, biologics

29

Acne is disorder of what structure?

pilosebaceous unit

30

acne influences by genetics?

strongly

31

acne influences by genetics?

strongly

32

4 components of acne?

1. keratinization of sebaceous duct
2. bacteria colonization
3. increase androgen levels
4. inflammation

33

what bacteria causes acne?

propionobactrium acnes

34

comedones are made of what?

oxidized sebum

35

whiteheads and black heads are?

whiteheads: closed comedones
blackheads: open comedones

36

whiteheads and black heads are?

whiteheads: closed comedones
blackheads: open comedones

37

mild-mod inflammatory lesions of acne are?

papules
pustules

38

severe acne called?

acne conglobata

39

adult onset acne in female if has androgenisation, alopecia, consider what?

PCOS

40

describe acne scars

textural change is permanent
colour is treatable

41

what meds get rid of comedones?

keratolytics
comedolytics

42

what topical Abx in acne?

erythromycin
clindamycin

43

what systemic ABx in acne?

doxy
minocycline
erythromycin
trimethoprim

44

big contraindication for systemic isotretinoin?

teratogenic

45

systemic isotretinoin treatment course?

6-12 months

46

Rosacea has 2 components:

vascular reactivity
inflammatory papules and pustules

47

difference between Rosacea and acne?

no comedones

48

long term: complication of Rosacea in men

Rhinophyma: sebaceus hyperplasia

49

ocular Rosacea happens to who?

20-40% of ppl with cutaneous Rosacea

50

scabies danger?

very contagious

51

scabies danger in indigenous?

predispose to staph and strep: rheumatic fever

52

scabies danger in indigenous?

predispose to staph and strep: rheumatic fever

53

symptoms of scabies?

intensely itchy, starts in hands then spreads

54

how long does it take for itch to come on first time you get scabies? second time?

first: about a month
second: immediately

55

3 things to confirm dx of scabies under microscope?

egg
scabies mite
faeces

56

first line Rx for scabies?

5% permethrin cream leave on overnight, wash off in AM,

57

treat who in scabies?

all contacts
wash everything