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November 15, 2010

Flagellate Dermatitis—Quiz Case

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Arch Dermatol. 2010;146(11):1301-1306. doi:10.1001/archdermatol.2010.321-a

A 32-year-old woman presented with a 4-day history of an intensely pruritic eruption. Physical examination revealed linear groups of erythematous papules in a flagellate pattern on her limbs and trunk (Figure 1). There were no mucosal abnormalities, and she did not have dermographia. She had taken no new medication. She had an interest in Asian cookery, and, on direct questioning, she affirmed that she had eaten a Japanese meal 1 day before the onset of this eruption. Findings from routine blood testing, including eosinophil count and erythrocyte sedimentation rate, were normal. A punch biopsy specimen from a papule was submitted for histopathologic evaluation (Figure 2).

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