Family Practice Exam Dermatology 2

Question 1

A 45-year-old presents with salmon-colored plaques with silvery scales on the elbows and knees. Nail pitting is also noted. What is the most likely diagnosis?

Accepted Answer

Psoriasis vulgaris

Answer

Psoriasis vulgaris presents with well-demarcated salmon-pink plaques with silvery scales on extensor surfaces, and nail pitting is a classic associated finding.

Question 2

A 28-year-old woman has recurrent facial flushing, erythema of the cheeks and nose, and papulopustules without comedones. What is the first-line topical treatment?

Accepted Answer

Metronidazole gel

Answer

Topical metronidazole is first-line therapy for rosacea, reducing papulopustules and erythema.

Question 3

A child presents with honey-crusted lesions around the mouth and nose that began as vesicles. Gram stain shows gram-positive cocci in chains. What organism is most likely responsible?

Accepted Answer

Streptococcus pyogenes

Answer

Non-bullous impetigo is most commonly caused by Streptococcus pyogenes (Group A Strep), producing honey-colored crusts.

Question 4

A 60-year-old man presents with a pearly, rolled-border nodule with telangiectasias on the nose that has grown slowly over two years. What is the most likely diagnosis?

Accepted Answer

Basal cell carcinoma

Answer

Basal cell carcinoma classically appears as a pearly papule or nodule with rolled borders and telangiectasias, most often on sun-exposed areas like the nose.

Question 5

A 35-year-old develops pruritic, coin-shaped eczematous plaques on the lower legs in winter. What is the most likely diagnosis?

Accepted Answer

Nummular eczema

Answer

Nummular (discoid) eczema presents as coin-shaped, pruritic, eczematous plaques often worse in dry winter conditions.

Family Practice Exam Practice Test

Family Practice Exam Practice Test

Family Practice Exam Dermatology 2