Man With Bumps on His Shin

A 37-year-old man presented to the emergency department with "bumps" that had been present on his right shin for 2 months. The papular rash spread over the anterior lower leg and was very pruritic. There was no known exposure to irritants, allergens, or infectious agents. A 10×20-cm area of hyperpigmented papules that coalesced was present at the anterior right shin, with some excoriations (Figure 1). The edges were well demarcated, without tenderness or purulence. No ulcerations, erosions, or other dermatoses were present (Figure 2).

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