(BMJ)—A 40-yo woman (gravida 2, para 2) presented 9 days postpartum w/ a 4-day hx of itchy rash that started on her limbs and progressed to her trunk, abdomen, and back. No meds. Exam: tense, fluid-filled blisters on limbs (palms/soles spared), w/ diffuse erythematous plaques on torso. Nikolsky sign neg. What is the dx?
Impetigo herpetiformis
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Erythema multiforme
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Pemphigoid gestationis
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Polymorphic eruption of pregnancy
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Epidermolysis bullosa
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