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什麼是血管神經性水腫?

Posted By vickong pun     July 8, 2021    

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什麼是血管神經性水腫?

  

  什麼是血管神經性水腫?血管神經性水腫為一種急性局部反應性的黏膜皮膚水腫,又稱巨型蕁麻疹,其特點是突然發作局限性水腫,但水腫消退亦較迅速。
臨床表現為突然急速發病。

病變好發部位為頭面部疏鬆結締組織處,如唇、舌、頰、眼瞼、耳垂、咽喉等,上唇較下唇好發,下眼瞼較上眼瞼好發,外陰部、胃腸道黏膜也能被侵犯。
患處有瘙癢、灼熱痛,隨之發生腫脹。
腫脹區界限不明顯,按之較韌而有彈性。

水腫可在十幾分鐘內完成。
腫脹部位可呈淡紅色或無色澤改變。
唇部發病者可見唇肥厚,翹突。

如腫脹發生在舌或軟齶,可引起口腔功能障礙。
如腫脹發生在會厭處則影響呼吸導致窒息,如不立即施行氣管切開,可致死亡。
少數患者有頭昏及輕度發熱等前驅症狀,腫脹可在數小時或1~2日內消退,不留痕跡,但能復發。

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