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Second group: most probably COVID-19 infection with a negative PCR test. A and B, Chilblain erythema, one in the early ulcerated phase. C, Erythematous indurated plaques on the digits of a 28-year-old man. D, Early targetoid phase of chilblains. E, Erythema multiforme–like lesions. F, Fully developed chilblain erythema in a 36-year-old man.
