A 17-year-old girl presented with a painful submandibular lymph node for 7 days, fever (up to 40°C) and asthenia for 5 days. She had no medical history and was not taking any medication. Vital signs were blood pressure 95/68 mm Hg, pulse 118 bpm, oxygen saturation 96% on room air. Physical examination showed a submandibular lymph node, bilateral conjunctivitis, palmoplantar erythrosis (figures 1 and 2) as well as a strawberry tongue (figure 3). Labs showed C-reactive protein at 338.7 mg/dL and white cell count at 11 720/µL (90% neutrophils). ECG demonstrated sinus tachycardia. Chest X-ray was normal and SARS-CoV-2 nasopharyngeal swab PCR was negative. Figure 1 Palmoplantar erythrosis. Figure 2 Palmoplantar erythrosis. Figure 3 Strawberry tongue. What is the most likely diagnosis? 1. Kawasaki disease 2. Scarlet fever 3. Multisystem inflammatory …

中文翻译：

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一个发烧和非典型皮疹的年轻女孩

一名 17 岁女孩出现下颌下淋巴结疼痛 7 天、发热（高达 40°C）和虚弱 5 天。她没有病史，也没有服用任何药物。生命体征是血压 95/68 mm Hg，脉搏 118 bpm，室内空气氧饱和度 96%。体格检查显示下颌下淋巴结、双侧结膜炎、掌跖红斑（图 1 和 2）以及草莓舌（图 3）。实验室显示 C 反应蛋白为 338.7 mg/dL，白细胞计数为 11 720/µL（90% 中性粒细胞）。心电图显示窦性心动过速。胸部 X 光片正常，SARS-CoV-2 鼻咽拭子 PCR 阴性。图 1 掌跖红斑。图 2 掌跖红斑。图 3 草莓舌。什么是最可能的诊断？1.川崎病 2.猩红热 3.多系统炎症……