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Flashcards in Dermatology Deck (262)
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1

What is a vesicle?

Fluid-filled blister less than 0.5 cm in diameter

2

What is a bulla?

Fluid-filled blister more than 0.5 cm in diameter

3

What is a skin fissure?

Deep crack/crevice into skin

4

What is a macule?

Flat pigmented lesion less than 1 cm in diameter

5

What is a patch?

Flat pigmented lesion more than 1 cm in diamter

6

What is a papule?

Raised lesion less than 0.5 cm in diameter

7

What is a nodule?

Raised lesion more than 0.5 cm in diameter

8

What is a pustule?

Pus-filled lesion

9

What is a plaque?

Raised lesion more than 1 cm in diameter

10

What is lichenification?

Thickened skin

11

What is purpura?

Purple pigmentation that does not blanche

12

What is petechiae?

1-2 mm of purpura

13

What is erythema?

Red pigmentation that does blanche

14

What is an erosion?

Superficial break in epidermis

15

What is an ulcer?

Deep break in epidermis and dermis

16

What is a wheal?

Compressible dermal swelling

17

List skin manifestations of diabetes

Flexural candidiasis
Folliculitis, infection
Necrobiosis lipoidica
Acanthosis nigricans
Ulcers
Xanthomata

18

What is necrobiosis lipoidica?

Waxy, shiny red-brown plaques with atrophic yellow lesions on shins

19

What is acanthosis nigricans?

Velvety thickening of skin, usually in the axillae

20

What is the main skin manifestation of Coeliac disease?

Dermatitis herpetiformis

21

List skin manifestations of inflammatory bowel disease

Erythema nodosum
Pyoderma gangrenosum

22

What is erythema nodosum?

Tender, ill-defined nodules usually found on shins

23

What is pyoderma gangrenosum?

Recurring nodulo-pustular ulcers that have a red-blue necrotic edge

24

List skin manifestations of systemic lupus erythematosus

Butterfly rash
Photosensitivity
Alopecia

25

What is the main skin manifestation of herpes simplex infection?

Erythema multiforme

26

List skin manifestations of vasculitis

Purpura (may be palpable)
Nodules
Livedo reticularis

27

What is livedo reticularis?

Mottled red-blue lesions that don't blanche
Usually triggered in the cold

28

List skin manifestations of dermatomyositis

Heliotrope rash
Gottron's papules
Scaly red plaques over neck (V-sign)
Periungual redness

29

List aetiology/risk factors for atopic dermatitis

Genetic mutation in filaggrin gene
Overactive TH2 cells results in more circulating IL-4, IL-5, IgE
Infection (Staph aureus)
Exacerbators (dust, temperature, allergies)

30

List clinical features of atopic dermatitis

Itchy, dry skin
Flexural scale and erythema
Weepy vesicles
Lichenification
Hyperlinear pals
Eczema herpeticum (HSV infection)