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眼睑带状疱疹病因学

来源:华人健康网 | 发布时间:2010-12-01 06:43:36 | www.chinesejk.com

眼睑带状疱疹病因学

眼睑带状疱疹为三叉神经半月神经节或其某一主支发生病毒急性感染而致。

  眼睑带状疱疹(herpes zoster)典型的病变多在三叉神经第一支—眼神经各分支(额神经、泪腺神经及鼻睫状神经)或第三主支各分支(比较少见)的皮肤分布区域,发生群集性水疱样皮疹。但不跨越睑及鼻部的中央界线,而仅局限于一侧。

  眼睑带状疱疹侵犯机理尚未完全明了,常发生在体弱之老年人。有复发性与原发性之分,前者较为少见,带状疱疹按病因分为流行型(病毒性)和症状型两类。前者可能是属于水痘病毒类型感染而引起。后者则为症状性带状疱疹。实际只是以往曾一度发生感染而潜伏下来的隐患,后来经新诱发刺激而活跃的病变,与流行型者并无本质差别,便后者则多见于年青人且易复发。

(编辑:阳阳 )

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