ABD MCQ

Question 1

Which layer of the skin contains blood vessels and nerves?

Accepted Answer

Dermis

Answer

The dermis is the layer of skin located beneath the epidermis. It is rich in connective tissue, blood vessels that supply nutrients and regulate temperature, and nerves that detect sensations like touch, pain, and temperature. The epidermis, in contrast, is avascular (lacks blood vessels) and primarily provides protection.

Question 2

Which condition is commonly treated with topical corticosteroids?

Accepted Answer

Eczema

Answer

Eczema (atopic dermatitis) is characterized by inflammation, itching, and redness of the skin. Topical corticosteroids are a primary treatment for eczema because they effectively reduce inflammation and suppress the immune response in the affected skin, alleviating symptoms. While they might be used for other conditions, they are a cornerstone for eczema management.

Question 3

What is the typical presentation of basal cell carcinoma?

Accepted Answer

Pearly nodule with telangiectasia

Answer

Basal cell carcinoma (BCC) typically presents as a pearly or translucent nodule, often with rolled borders and visible small blood vessels (telangiectasia) on its surface. It can also appear as a flat, firm, pale area or a red patch. This classic description helps differentiate it from other skin lesions and aids in early diagnosis.

Question 4

Which microorganism is most commonly responsible for acne?

Accepted Answer

Cutibacterium acnes

Answer

Cutibacterium acnes (formerly Propionibacterium acnes) is a bacterium that lives on the skin and is a primary contributor to the development of acne vulgaris. It thrives in the anaerobic environment of clogged hair follicles, breaking down sebum and producing inflammatory byproducts that lead to the characteristic lesions of acne.

Question 5

What is a hallmark sign of psoriasis?

Accepted Answer

Thick, scaly, red plaques

Answer

Psoriasis is a chronic autoimmune skin condition characterized by the rapid overproduction of skin cells, leading to the formation of distinctive thick, silvery-white scales on red, inflamed patches called plaques. These plaques are typically well-demarcated and can appear anywhere on the body, commonly on elbows, knees, and scalp.

American Board of Dermatology (ABD) Practice Test

American Board of Dermatology (ABD) Practice Test

ABD MCQ