Dermatology Flashcards
6 cards from real AANP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Dermatology flashcards as text
A patient presents with a well-demarcated, silvery-scaled plaque on the extensor surface of the elbow. What is the most likely diagnosis?
Answer: Psoriasis
Psoriasis classically presents as well-demarcated erythematous plaques with silvery scales on extensor surfaces such as the elbows and knees.
Which finding is most associated with a melanoma rather than a benign nevus?
Answer: Irregular border and multiple colors
The ABCDE criteria for melanoma include Asymmetry, Border irregularity, Color variation, Diameter >6mm, and Evolution—irregular borders and multiple colors are hallmarks.
A patient with a history of atopy presents with intensely pruritic, flexural rashes since childhood. What is the most likely diagnosis?
Answer: Atopic dermatitis (eczema)
Atopic dermatitis typically begins in childhood, is associated with the atopic triad (asthma, allergic rhinitis, eczema), and preferentially affects flexural areas.
What is the first-line treatment for mild-to-moderate acne vulgaris characterized by comedones and a few inflammatory papules?
Answer: Topical retinoids and/or benzoyl peroxide
Topical retinoids normalize follicular keratinization and benzoyl peroxide has antimicrobial properties; both are recommended as first-line agents for mild-to-moderate acne.
A patient presents with a target-like skin lesion with central blistering after starting a new antibiotic. What condition should be suspected?
Answer: Erythema multiforme
Erythema multiforme is characterized by target lesions (three concentric zones) and is commonly triggered by HSV infection or medications such as sulfonamides and penicillins.
A unilateral, painful, vesicular rash following a dermatomal distribution in an elderly patient is most consistent with:
Answer: Herpes zoster (shingles)
Herpes zoster results from reactivation of varicella-zoster virus in a dorsal root ganglion, presenting as a unilateral vesicular rash in a dermatomal pattern with pain.