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阴虱是怎么回事

2020-06-01 阅读量:2777次
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阴虱是怎么回事?阴虱病(pediculosispubis)是由阴虱引起的一种性传播疾病,常见于伴侣双方同时感染。虱为哺乳动物的体外寄生虫,有三种虱子可寄生于人体:阴虱、头虱和体虱,其中阴虱与体虱(头虱)在形态结构上存在差异,可引起虱病,有时也可伴随其他性传播疾病发生,因此受到关注。

虱子的生活史包括5个阶段:卵、3个若虫阶段和成虫阶段,所有发育阶段均在寄主身上完成。

阴虱的卵较头虱和体虱的卵小,呈椭圆形、乳白色。虱子成虫通常仅在寄主死亡、发热或与其他寄主发生密切身体接触时,才会离开原寄主。

阴虱分为雌雄两种,体长约1mm,身体结构包括头、胸和分节的腹部,具三对足。其中中足、后足及爪部较为发达,每只足的末端具有钩状爪,可与胫节下方的指状突起配合,帮助虱子附着在寄主的体毛上。腹部宽度大于长度,外形类似螃蟹,因此也被称为“蟹虱”。阴虱不仅可见于阴部,也可出现在腋下、胡须、睫毛及眉毛等部位。

虱子生存依赖于人体血液,取食时会将口器刺入皮肤,注入唾液防止血液凝固,进而吸入血液至消化道。虱子取食过程中可能将深色粪便排泄于寄主皮肤表面。

通过以上介绍,相信大家对阴虱有了进一步了解。建议患者在发现相关症状后及时就医,并遵照医嘱进行诊治,以促进康复。

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2020-06-01

男性阴虱的传染方式有哪些

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