Extra

Question 1

what is acanthosis nigricans

Answer 1

darkened, thickened patches of skin that usually develop in the armpit and around the groin and neck

Question 2

what is associated with coeliac disease

Answer 2

dermatitis herpetiforms

- very itchy/’burning’ blisters on elbows, scalp, shoulders, ankles

Question 3

what can cause erythema nodosum

Answer 3

IBD
Sarcoidosis
TB

Question 4

how is erythema nodosum often described

Answer 4

tender ill-defined nodules of the shin

Question 5

what is seen in RA

Answer 5

RA nodules

vasculitis - nodular purpara, with ulcers

Question 6

what is seen in SLE

Answer 6

facial butterfly rash
photosensitivity
red scaly rash
diffuse alopecia

Question 7

target lesions, usually on extensor surfaces

Answer 7

Erythema multiforme

Question 8

what is erythema multiform associated with

Answer 8

systemic upset
fever
severe mucosal involvement

Question 9

papula becomes a spreading red ring

Answer 9

erythema migrans

i.e. lyme disease

Question 10

rodent ulcer

Answer 10

BCC

Question 11

slow-growing red scaly plaque

Answer 11

Bowen’s disease

Question 12

isolated painless genital ulcer

Answer 12

Syphilis

Primary chancre

Question 13

pityrosporum versicolor

Answer 13

multiple hypo or hyper-pigmented macules on the back - white lesions

Question 14

post-eczema hypo pigmentation often on children’s faces

Answer 14

pityriasis alba

Question 15

what is vitiligo

Answer 15

autoimmune
white patches +/- hyper pigmented border
sunlight causes itch

Question 16

active red scaly edge + central healing

Answer 16

tinea

Question 17

NF type 1 dermatology

Answer 17

cafe au lait spots

axillary freckling

Question 18

itchy, crusted/scaly eczema, worsened by heat

Answer 18

discoid eczema

Question 19

‘herald patch’ oval red lesions with scaly edges e.g. on trunk

Answer 19

Pityriasis rosea

Question 20

mild psoriasis Tx

Answer 20

Calcipotriol + betamethasone

Question 21

Tx for skin fungal infection

Answer 21

Terbinafine or imidazole

Question 22

what causes warts

Answer 22

HPV

Question 23

Acne treatment

Answer 23

Mild (mainly facial comedones)
- Benzoyl peroxide or Azelaic acid

Moderate (inflammatory lesions, face +/- torso)
- Doxycyline (erythromycin if pregnant) with topical Benzoyl peroxide

Severe (nodules, cysts, scar)

• Isotretinoin (teratogenic)
• Co-cyprindiol used if wants to get pregnant

Question 24

Tx of pityriasis rosea

Answer 24

self limiting

Oral erythromycin may help