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Red Scaly Rash Following Tattoo Application

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A 26-year-old man presented with a mildly pruritic red scaly rash on the right arm of 3 weeks' duration. He reported having a tattoo placed on previously normal skin on the right lateral arm prior to the development of the rash. Two weeks after receiving the tattoo, he developed scaling and redness of the skin involved in the tattoo. He also had similar papules and plaques over the rest of his body. Physical examination showed well-demarcated, erythematous, scaly papules and plaques following the design of a black-pigmented tattoo on the lateral aspect of the right arm. There also were similar erythematous scaly plaques scattered over both arms and the trunk. He denied any pain or blister formation of the involved areas.

What's the diagnosis?

allergic contact dermatitis

irritant contact dermatitis

isomorphic lichen planus

isomorphic psoriasis

tattoo granuloma

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