An 81-yo man presented with 10-day hx of profoundly itchy, blistering rash. Exam revealed >100 blisters with sparing of mucous membranes. Nikolsky sign negative. Labs normal except for elevated CRP. What is it?
Cellulitis
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Insect bites
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Tinea corporis
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Bullous pemphigoid
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Nummular eczema
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