ABD General MCQ 2

Question 1

A 6-year-old presents with honey-colored crusts around the nose and mouth. What is the most likely diagnosis?

Accepted Answer

Impetigo

Answer

Honey-colored crusting on the face is the classic presentation of non-bullous impetigo, usually caused by Staphylococcus aureus or Streptococcus pyogenes.

Question 2

Which HLA type is most strongly associated with dermatitis herpetiformis?

Accepted Answer

HLA-DQ2

Answer

Dermatitis herpetiformis, the cutaneous manifestation of celiac disease, is strongly linked to HLA-DQ2 (and DQ8).

Question 3

A pearly papule with rolled borders and telangiectasias on the nose is most consistent with which tumor?

Accepted Answer

Basal cell carcinoma

Answer

A pearly, translucent papule with rolled borders and arborizing telangiectasias is the hallmark of nodular basal cell carcinoma.

Question 4

Nikolsky sign, where the epidermis shears with lateral pressure, is characteristically positive in which condition?

Accepted Answer

Pemphigus vulgaris

Answer

Pemphigus vulgaris involves intraepidermal acantholysis, producing a positive Nikolsky sign, unlike the subepidermal bullous pemphigoid.

Question 5

Which medication is first-line oral therapy for severe nodulocystic acne?

Accepted Answer

Isotretinoin

Answer

Isotretinoin is the most effective agent for severe recalcitrant nodulocystic acne, though it requires pregnancy prevention monitoring.

American Board of Dermatology (ABD) Practice Test

American Board of Dermatology (ABD) Practice Test

ABD General MCQ 2