Dermatology

Question 1

28 year old woman develops painful, purple lesions on her shins. It resolves within 6 weeks and the lesions heal without scarring.

Answer 1

Erythema nodosum

Question 2

Holiday in Spain + multiple patches of depigmentation + mildly flaky and itchy

Answer 2

Pityriasis versicolor

Question 3

State the treatments for moderate to severe acne

Answer 3

Topical adapalene with topical benzoyl peroxide
Topical tretinoin with topical clindamycin
Topical adapalene with topical benzoyl peroxide + either oral lymecycline or oral doxycycline
Topical azelaic acid + either oral lymecycline or oral doxycycline.

Question 4

Pregnant + itchy rash around the umbilicus + blistering lesion in her peri-umbilical region and on arms.

Answer 4

Pemphigoid gestationis.

Question 5

Treatment for vitiligo

Answer 5

Sunblock
Topical corticosteroids may reverse the changes if early.

Question 6

Photosensitive rash with blistering and skin fragility on the face and dorsal aspect of hands +
Hypertrichosis + Hyperpigmentation

Answer 6

Porphyria cutaneous tarda

Question 7

Oral mucosal ulceration in Ashkenazi Jewish population + skin blistering with easily ruptured vesicles and bullae + acantholysis on biopsy.

Answer 7

Pemphigus vulgaris