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Sweet syndrome lesions (A) First localization appeared 24 h after the vaccine injection on the back. (B) Erythematous papulosis on the left shoulder. (C) (1) Cutaneous tests: Positive IDR with SARS‐CoV‐2 Pfizer‐BioNTech mRNA vaccine diluted to 1/10e at day 5. (2) Patch test with pur SARS‐CoV‐2 Pfizer‐BioNTech mRNA vaccine in healed skin. (3) Patch test with pur SARS‐CoV‐2 Pfizer‐BioNTech mRNA vaccine in normal skin
