Check out today’s Step 2 CK Qmax Question Challenge.
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A 21-year-old man presents to a dermatologist with the lesions shown in the image. The lesions have been present for approximately 3 months. They were much smaller when he first noticed them, and they have slowly gotten larger. He denies pruritus, joint pain, or fatigue. When a scale is removed, pinpoint bleeding is seen underneath.
What is the underlying pathology?
A. Antigen-mediated cross-linking of receptors on sensitized mast cells
B. Antinuclear antibodies and immune complex deposition
C. Cutaneous T-lymphocyte-mediated inflammation
D. Cutaneous yeast infection
E. Type II hypersensitivity reaction
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Categories: USMLE-Rx Step 2 Practice Q's