| cutaneous diphtheria |
a form of diphtheria involving the skin, occurring as a primary infection, usually seen in warm climates, characterized by a nonhealing, punched-out ulcer with a rolled border, surrounded by a zone of erythema, and sometimes covered by a hard, adherent membrane; or as a secondary infection of a preexisting lesion (burn, abrasion, cut, insect bite, etc.); or as a superinfection of various eczematous lesions.
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