Derm

Question 1

‘Stuck on’ waxy appearance

Answer 1

Seborrheic keratosis

Question 2

Red plaques with silvery-white scales and sharp margins

Answer 2

Psoriasis

Question 3

Most common type of skin cancer; lesion is a pearly-coloured papule with a translucent surface and telangiectasias

Answer 3

Basal cell carcinoma

Question 4

Honey crusted lesions

Answer 4

Impetigo

Question 5

A febrile patient with a history of diabetes presents with a red, swollen, painful lower extremity

Answer 5

Cellulitis

Question 6

+ Nikolsky sign

Answer 6

Pemphigus vulgaris

Question 7

• Nikolsky sign

Answer 7

Bullous pemphigoid

Question 8

55 year old obese patient with dirty, velvety patches on the back of the neck

Answer 8

Acanthosis nigricans

Check fasting blood glucose to rule out diabetes

Question 9

Dermatomal distribution

Answer 9

Varicella zoster

Question 10

Flat topped papules

Answer 10

Lichen planus

Question 11

Iris-like target lesions

Answer 11

Erythema multiforme

Question 12

A lesion occurring in a geometric pattern in areas where skin comes into contact with clothing or jewellery

Answer 12

Contact dermatitis

Question 13

Presents with one large patch and many smaller ones in a treelike distribution

Answer 13

Pityriasis rosea

Question 14

Flat, often hypopigmented lesions on the chest and back; KOH prep has a ‘spaghetti and meatballs’ appearance

Answer 14

Tinea (pityriasis) versicolor

Question 15

5 characteristics of a naevus suggestive of melanoma

Answer 15

Asymmetry, border irregularity, colour variation, large diameter, changing appearance

Question 16

A premalignant lesion from sun exposure that can lead to squamous cell carcinoma

Answer 16

Actinic keratosis

Question 17

Crusting vesicles in all stages of evolution on entire body

Answer 17

Lesions of primary varicella

Question 18

‘cradle cap’

Answer 18

Seborrheic dermatitis

Treat conservatively with bathing and moisturising agents

Question 19

Associated with Propionibacterium acnes and changes in androgen levels, and the treatment of last resort

Answer 19

Acne vulgaris

Last resort treatment is oral isotretinoin (requires monthly blood tests)

Question 20

Painful, recurrent vesicular eruption of mucocutaneous surfaces

Answer 20

Herpes simplex

Question 21

Inflammation and epithelial thinning of the anogenital area, predominantly in postmenopausal women

Answer 21

Lichen sclerosis

Question 22

Exophytic nodules with scaling or ulceration; the second most common type of skin cancer

Answer 22

Squamous cell carcinoma