41yo F c/o 5 day old acute onset localised painful blanching | Figure 1

dancingbush

Clinical Researcher

41yo F c/o 5 day old acute onset localised painful blanching Papular rash lower right back, now looking vesicular. No response to topical hydrocortisone applied at home. No itching/involvement elsewhere, no hx fever/malaise/insect bites/exposure to new lotions etc - generally well.

Ddx & tx?

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