Dermatology II

Question 1

where does atopic eczema usually occur? look like?

Answer 1

ill defined
scaly
patches
in flexures

Question 2

what is filaggrin mutation?

Answer 2

genetic reduced skin barrier function, more likely atopic eczema

Question 3

atopic eczema happens where on infant more likely?

Answer 3

face

Question 4

what is lichenification?

Answer 4

chronic rubbing/scratching of atopic eczema

Question 5

what is discoid eczema?

Answer 5

in annular discs,

mimics psoriasis and tinea

Question 6

discoid eczema responds to?

Answer 6

potent topical steroids

Question 7

what is asteatotic eczema? where? who? when

Answer 7

front of legs of elderly in winter

Question 8

how does pompholyx/vesicular hand/foot eczema happen?

Answer 8

excessive washing/sweating

avoid soaps

Question 9

what is diffuse erythrodermic eczema?

Answer 9

> 90% body eczema

treat with systemic immunosuppression

Question 10

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

Answer 10

staph aureus colonized the eczema

Question 11

treatments for staph aureus in eczema?

Answer 11

chlorine bath

systemic antibiotics

Question 12

eczema herpeticum is? looks like

Answer 12

secondary infection by HSV

punched out erosions

Question 13

why is eczema herpeticum medical emergency? how treat?

Answer 13

corneal scarring

systemic antivirals

Question 14

how to diagnose contact dermatitis?

Answer 14

patch testing

Question 15

how to diagnose contact dermatitis?

Answer 15

patch testing

Question 16

what kind of phototherapy for atopic eczema?

Answer 16

UVB 311nm

immunodesensitization

Question 17

atopic eczema immunosuppression options?

Answer 17

short: oral prednisolone

med-long: methotrexate, azathioprine etc.

Question 18

erythematous, scaly well demarcated plaques most likely dx?

Answer 18

chronic plaque psoriasis

Question 19

2 peaks of onset for psoriasis?

Answer 19

20s

50s

Question 20

where get rash in psoriasis?

Answer 20

extensor rash

Question 21

psoriasis appearance classical?

Answer 21

symmetrical
extensor surface
scaly
well demarcated
erythematous

Question 22

most common cause of eruption on penis is?

Answer 22

genital psoriasis

Question 23

nail psoriasis can cause what to nail?

Answer 23

onycholysis

Question 24

what is guttate psoriasis? who gets it? trigger?

Answer 24

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

Question 25

how to treat guttate psoriasis?

Answer 25

phototherapy

Question 26

pustular psoriasis dangerous?

Answer 26

yes. medical emergency

systemic fever, chills, loss of barrier function

Question 27

psoriatic arthritis affects how many % of psoriasis patients?

Answer 27

10%

Question 28

systemic Rx of psoriatic arthritis

Answer 28

methotrexate, cyclosporin A, biologics

Question 29

Acne is disorder of what structure?

Answer 29

pilosebaceous unit

Question 30

acne influences by genetics?

Answer 30

strongly

Question 31

acne influences by genetics?

Answer 31

strongly

Question 32

4 components of acne?

Answer 32

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

Question 33

what bacteria causes acne?

Answer 33

propionobactrium acnes

Question 34

comedones are made of what?

Answer 34

oxidized sebum

Question 35

whiteheads and black heads are?

Answer 35

whiteheads: closed comedones
blackheads: open comedones

Question 36

whiteheads and black heads are?

Answer 36

whiteheads: closed comedones
blackheads: open comedones

Question 37

mild-mod inflammatory lesions of acne are?

Answer 37

papules

pustules

Question 38

severe acne called?

Answer 38

acne conglobata

Question 39

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

Answer 39

PCOS

Question 40

describe acne scars

Answer 40

textural change is permanent

colour is treatable

Question 41

what meds get rid of comedones?

Answer 41

keratolytics

comedolytics

Question 42

what topical Abx in acne?

Answer 42

erythromycin

clindamycin

Question 43

what systemic ABx in acne?

Answer 43

doxy
minocycline
erythromycin
trimethoprim

Question 44

big contraindication for systemic isotretinoin?

Answer 44

teratogenic

Question 45

systemic isotretinoin treatment course?

Answer 45

6-12 months

Question 46

Rosacea has 2 components:

Answer 46

vascular reactivity

inflammatory papules and pustules

Question 47

difference between Rosacea and acne?

Answer 47

no comedones

Question 48

long term: complication of Rosacea in men

Answer 48

Rhinophyma: sebaceus hyperplasia

Question 49

ocular Rosacea happens to who?

Answer 49

20-40% of ppl with cutaneous Rosacea

Question 50

scabies danger?

Answer 50

very contagious

Question 51

scabies danger in indigenous?

Answer 51

predispose to staph and strep: rheumatic fever

Question 52

scabies danger in indigenous?

Answer 52

predispose to staph and strep: rheumatic fever

Question 53

symptoms of scabies?

Answer 53

intensely itchy, starts in hands then spreads

Question 54

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

Answer 54

first: about a month
second: immediately

Question 55

3 things to confirm dx of scabies under microscope?

Answer 55

egg
scabies mite
faeces

Question 56

first line Rx for scabies?

Answer 56

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

Question 57

treat who in scabies?

Answer 57

all contacts

wash everything