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健康

List 症狀 – 发

紫绀(希腊语 kyanos,意为深蓝色)是指由于身体某些部位小血管中还原(脱氧)血红蛋白或其衍生物增多,导致皮肤和黏膜呈现蓝色。紫绀通常最常见于嘴唇、指甲床、耳垂和牙龈。
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