ABD Reading 2

Question 1

A 45-year-old presents with a well-demarcated, salmon-colored plaque with silvery scale on the extensor elbow. Pinpoint bleeding appears when scale is removed. What is this sign called?

Accepted Answer

Auspitz sign

Answer

The Auspitz sign is pinpoint bleeding after removal of psoriatic scale, reflecting dilated dermal capillaries.

Question 2

Which histologic feature is most characteristic of psoriasis vulgaris?

Accepted Answer

Munro microabscesses

Answer

Munro microabscesses are collections of neutrophils in the stratum corneum, a hallmark of psoriasis.

Question 3

A drug used for severe psoriasis inhibits dihydrofolate reductase and requires folic acid supplementation. What is it?

Accepted Answer

Methotrexate

Answer

Methotrexate inhibits dihydrofolate reductase and warrants folic acid to reduce toxicity.

Question 4

Which biologic class targets IL-17A and is used for moderate-to-severe plaque psoriasis?

Accepted Answer

Secukinumab

Answer

Secukinumab is a monoclonal antibody against IL-17A effective in plaque psoriasis.

Question 5

A patient with psoriasis develops new plaques along a linear scratch mark. This phenomenon is termed:

Accepted Answer

Koebner phenomenon

Answer

The Koebner phenomenon is the appearance of lesions at sites of skin trauma.

American Board of Dermatology (ABD) Practice Test

American Board of Dermatology (ABD) Practice Test

ABD Reading 2