Dermatology

Question 1

Herald patch on chest followed by ovale macules

Answer 1

Pityriasis vesicolor
- monitor and should go away on its own

Question 2

Necrobiosis lipodica

Answer 2

Seen in diabetics on the shins, poorly responsive to treatment

Question 3

Lentigo maligna

Answer 3

Type of melanoma
- slow growing
- tend to be light brown with darker sections
- seen in sun exposed skin

Question 4

Bowens disease

Answer 4

From of SCC
- tends to be red and scaly

Question 5

Dermatitis herpetiformis

Answer 5

Seen in those with Coeliac disease
Mx: gluten free diet and dapsone

Question 6

Eczema herpeticum management

Answer 6

IV aciclovir

Question 7

Behcets management

Answer 7

oral steroids or azathioprine

Question 8

Erythema multiforme

Answer 8

Target lesions, tends to be self limiting

Question 9

Microsporum canis infection

Answer 9

Bright green immunofluorscence
Seen in pet owners
Bald patch getting itchy

Question 10

Zinc deficiency

Answer 10

Seen in alcoholics
Itchy skin

Question 11

Syphilis management

Answer 11

IM benpen as a single dose

Question 12

Dermatitis herpatiformis Ig on skin biopsy

Answer 12

IgA

Question 13

Petyriasis vesicolor cause

Answer 13

Malassezia globosa
Presents with an area of depigmentation

Management: topical antifungal

Question 14

Peristomal pyoderma gangrenosum management

Answer 14

Topical tacrolimus

Question 15

Pellagra

Answer 15

Vitamin D3 deficiency
- photosensitivite dermatitis
- dementia
- diarrhoea

Question 16

Eczema management

Answer 16

1. Emollients
2. Topical corticosteroids
3. Topical calcineurin inhibitors e.g. tacrolimus
4. UVB light therapy
5. Systemic, methotrexate, azathioprine
6. Biologic IL-3/Il4 - dipolimuab

Question 17

Acne management

Answer 17

Mild - mod:
- topical adapalene and benzyl peroxide

Mod- severe:
- topical azelic acid + oral doxy
- can use erythromycin in pregnancy

Severe:
- oral isoretinoin

Question 18

Chronic psoriasis management

Answer 18

Mild:
- potent corticosteroid and vitamin D analogue up to 4 weeks

if no success: vitamin D analogue twice a day

third line: potent corticosteroid or coal tar or short acting dithranol

Question 19

Acne grading

Answer 19

Mild: open and closed desmosomes on face
Moderate: widespread lesions with crusting (papules and pustules)
Severe: extensive inflammatory lesions

Question 20

Secondary care psoriasis

Answer 20

• phototherapy UVB light
• systemic: methotrxate –> ciclosporin –> infliximab

Question 21

Porphyria cutanea tarda

Answer 21

Blistering skin rash seen when they go in the sun
Seen in alcoholics

Question 22

Pseudoxanthoma at risk of

Answer 22

Upper GI bleed

Question 23

Psoriasis cytokine to target

Answer 23

IL-17

Question 24

Donovan bodies

Answer 24

Granuloma inguinale, PO doxy

Question 25

Cheiroarthropathy

Answer 25

Complication of diabetes
- thickened skin
- carpal tunnel
- joint pain

Question 26

Pyoderma gangrenosum management

Answer 26

steroids