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痘痘为什么喜欢长脸上 揭秘 - 站长搜索
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痘痘为什么喜欢长脸上 揭秘

趣科技 2015-04-17 14:51:07 转载来源: 网络整理/侵权必删

除了脸上,貌似背上和胸前也是高发地段。但是脸上完全是重灾区?痘痘为啥偏爱我们的脸??因为面部的皮脂腺多、毛囊小~问题中的“痘痘”默认为是指青春痘,也就是痤疮

除了脸上,貌似背上和胸前也是高发地段。但是脸上完全是重灾区?痘痘为啥偏爱我们的脸??

因为面部的皮脂腺多、毛囊小~

问题中的“痘痘”默认为是指青春痘,也就是痤疮。痤疮主要与皮脂分泌过多、毛囊皮脂腺导管堵塞、细菌感染和炎症反应等有关,进入青春期后,人体内雄激素迅速增多,促进皮脂腺发育并产生大量皮脂。同时毛囊皮脂腺导管的角化异,常造成导管堵塞,皮脂排出障碍,形成微粉刺。毛囊中多种微生物大量繁殖,最终诱导并加重炎症反应。

看这个图:

图片来源于网络

颜面部的皮脂腺分泌旺盛。皮脂腺是皮肤的附属器官,如果皮下脂肪少,防寒能力弱,皮脂分泌就会增多,起防寒保温作用。胎儿出生后,皮脂排泄多,称为“新生儿痤疮”,以后分泌量减少,至青春发育期分泌增多,35岁以后分泌量又逐渐减少,男性比女性尤甚,皮肤会变得比较干燥、粗糙,出现皱纹。

另一方面,皮脂腺与毛囊密切相关,一般来说,皮脂腺小,则毛囊大,皮脂腺多而大,则毛囊小。颜面部的毛囊小,所以是痤疮的易发部位。

标签: 痘痘 为什么 喜欢 脸上 揭秘


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