Miscellaneous skin conditions

Question 1

What is the most common pattern of lichen planus?

Answer 1

Eruption of itchy reddish-purple papules, often on wrist, back, mouth and genitalia

Question 2

What do the oral lesions in lichen planus look like?

Answer 2

Lacy white streaks on the cheek lining

Question 3

What is the pathophysiology of lichen planus?

Answer 3

T-cell mediated attack on the epidermis

Question 4

How is lichen planus treated?

Answer 4

Potent topical steroids

Question 5

Short, prodromal illness, followed by a few large, oval, red scaly patches usually on trunk or upper arms, followed 2-3 days later by a sudden eruption of pink oval patches on trunk, upper arms and thighs

Answer 5

Pityriasis rosea

Question 6

What does “peripheral collarette” mean?

Answer 6

Feature of the lesions in pityriasis rosea; lesions peel from the centre towards the edge

Question 7

What is the normal outcome for the rash in pityriasis rosea?

Answer 7

Disappears within 6-8 weeks

Question 8

Acquired depigmentation as a result of loss of melanocytes

Answer 8

Vitiligo

Question 9

Management of vitiligo (4)

Answer 9

Following may help:
Topical steroids
Phototherapy
Sunscreens
Cosmetic camouflage