Dermatology Flashcards Preview

Royal College Exam > Dermatology > Flashcards

Flashcards in Dermatology Deck (78)
Loading flashcards...
1

Erythematous rash in newborn that SPARES folds...

Contact dermatitis

2

Erythematous rash in newborn INVOLVING folds...

Candida

3

Treatment of mild acne

Topical retinoid +/- anti-inflammatory (benzoyl peroxide)

4

TWO risk of giant congenital nevus (> 20cm predicted adult size)

1. Leptomeningeal melanocytosis (CNS involvement) 2. 1-2% risk of developing melanoma (with almost 100% mortality)

5

First line treatment of scabies

5% permethrin - leave on overnight, treat close contacts, repeat in 1 week

6

First line treatment of head lice

1% permethrin x 15 mins, repeat one week later

7

MRSA skin abscess management, < 1 month

- admit - drainage - vancomycin IV

8

MRSA skin abscess, infant 1-3mos, no surrounding erythema/cellulitis

Septra (if concern for cellulitis, add keflex)

9

MRSA skin abscess > 3 mos

I&amp;D, send for culture

10

Name of the skin lesion associated with SJS &amp; TEN

Erythema multiforme

11

SJS

< 10% skin involvement

12

Toxic epidermal necrolysis

> 30% skin involvement

13

Sturge-Weber syndrome

- nevus flammeus (port-wine stain) in V1 - glaucoma - leptomeningeal angioma

14

Infants with subcutaneous fat necrosis are at risk of

hypercalcemia

15

If resistant lice (failure of treatment), what can you treat with?

Resultz

16

If a teen with acne failed topical anti-inflammatory/antibiotics + retinoids; what else can you do?

Doxycycline Anti-androgens (in female patients) Add topical retinoids/benzoyl peroxide

17

Treatment for tinea capitus

oral terbinafine

18

Treatment of comedonal acne

retinoids

19

Treatment of inflammatory acne - mild

retinoids + anti-inflammatory (benzoyl peroxide + antibiotic)

20

Name the lesion, when they occur, natural history

Halo nevus

May occur during puberty or pregnancy

The central pigmented nevus may disappear and the depigmented area usually repigments

 

21

Name the lesion

Spitz nevus

(pink/red, smooth, dome-shaped, firm, hairless papule)

usually < 1cm

local recurrence happens after excision 5% of the time

if suspect melanoma, excise entire lesion

22

Syndromes associated with the development of melanoma (3)

Familial mole-melanoma syndrome

Dysplastic nevus syndrome

BK mole syndrome

23

Definition of atypical nevus

When do they appear?

Management

Acquired, 5-15mm, round to oval, irregular margins/colour

Usually develop in puberty

Management: skin exam Q6-12 mos, photos, sun protection, monitoring for melanoma

 

24

What meds should you think of if someone has photosensitivity?

NSAIDs

Diuretics

Voriconazole

Antibiotics

25

What is Nikolsky sign?

Applying slight pressure with the thumb, the skin will wrinkle and the epidermis will separate from the dermis

26

How does isotrentoin (Accutane) work for acne?

Isotretinoin reduces size and secretion of sebaceous glands, normalizes follicular keratinization, prevents new microcomedone formation, decreases the population of P. acnes, and exerts an anti-inflammatory effect.

27

How long should someone avoid becoming pregnant after stopping Accutane?

at least 6 weeks

28

How can you prevent the teratogenic effect of Accutane?

Counsel patients to use 2 forms of birth control, do monthly pregnancy tests

29

What is this? Why does it occur?

Traction alopecia, common in black school-aged children, due to trauma from tight-braids, headbands (increased risk if chemically-relaxed hair)

30

Clinical features of Trichotillomania

Pulling, twisting, breaking of hair producing irregular areas of hair loss. Remaining hairs are various lengths and are blunt tipped (from breaking). Scalp appears normal. 

Closely related to OCD.