Peds - Derm II Flashcards Preview

NP > Peds - Derm II > Flashcards

Flashcards in Peds - Derm II Deck (43)
Loading flashcards...
1

A common, benign, hyperproliferative inflammatory skin disorder

Psoriasis

2

Psoriasis - what's going on?
(4)

o Epidermal turnover time is reduced from 14 days to 2 days
o Keratinazation doesn't occur
o Immature NUCLEATED cells are seen on the horny layer
o May be immunologically mediated

3

Psoriasis - typical lesion

Lesions are red, sharply defined plaques with silvery scales

4

Psoriasis - hallmark *sign*

Auspitz's sign - droplets of blood when scale is lifted

5

Psoriasis - management

o Topicals for the scalp = tar, salicylic acid
o Topical steroids for the skin = betamethasone, - triamcinolone
o If severe - UVB light, coal tar exposure

6

Pityriasis rosea - cause and timing

o thought to be viral
o more common in spring and fall
o often patients report a recent URI

7

Pityriasis rosea -
duration

3-8 weeks, self-limiting

8

Pityriasis rosea -
differential, especially if no itching or if palmar/plantar are involved

syphillis

9

Management of pityriasis rosea pruritis (3)

o oral antihistamines (atarax/hydroxizine, claritin)
o topical antipruritic
o topical steroids (triamcinolone)

10

Examples of topical antipruritics (4)

Sarna lotion
Prax lotion
Itch-x gel
Cetaphil with menthol

11

What oral antibiotic can be used to dry up the lesions of pityriasis rosea?

Erythromycin x 14 days

12

Impetigo - typically caused by which gram positive organisms?

strep
staph

13

Impetigo - pharmacotherapy for MILD cases

Bactroban
Bacitracin

14

Impetigo - PO pharmacotherapy for more SEVERE cases

strep --> erythromycin or PCN
staph --> erythromycin or cephalexin

15

Impetigo - pharmacotherapy for cellulitis
(3)

IV ABT
o nafcillin
o vancomycin
o doxycycline

16

Scabies - incubation

4 - 6 weeks

17

Scabies management (2)

Permethrin (Nix) - repeat in 1 week
or
Ivermectin - do not use in pregnant, lactating - kills eggs so can cross blood-brain barrier

18

A spirochetal disease; the most common vector-borne disease in US

Lyme disease

19

Lyme disease organism

Borrelia burgdorferi

20

Lyme disease - stage 1
(2)

Erythema migrans
Flu-like s/sx

21

Lyme disease - stage 2
(3)

Headache
Stiff joints
Bell's palsy

22

Lyme disease - stage 3
(3)

Joint pain
Subacute encephalopathy
Acrodermatitis chronicum atrophicans

23

Acrodermatitis chronicum atrophicans

Associated with Lyme disease

Blue-red discoloration of distal extremity with edema

24

Lyme disease -
Which antibody detection test is initially done?

ELISA

25

Lyme disease -
What test is confirmatory?

Western blot assay

26

Lyme disease -
Is ESR likely to be elevated?

Yes

27

Lyme disease -
Diagnostic criteria

Exposure to tick habitat in past 30 days AND
o erythema migrans OR
o late manifestation AND
o lab confirmation

28

Lyme disease -
Management if SKIN symptoms only -->

Doxy if over 7 years of age
amoxicillin or cefuroxime if not

29

Lyme disease -
Management of stage 2 or 3

Refer to infectious disease specialist

30

Possible acute complications of Rubeola (4)

ear infection
pneumonia
encephalitis
acute thrombocytopenic purpura