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“濕疹”患者為何皮膚更易乾燥?

在健康正常的皮膚中,角質層中含有10%~20%的水分,這些水分的主要來自汗腺分泌的汗液,皮膚表面的油脂膜可以保護水分不至於快速蒸發,從而保持角質層中的含水量。 此外角質層中還有很多吸附性的水溶性物質,Jacobi把表皮細胞在角化過程中形成的這些物質叫做天然保濕因子,天然保濕因子與蛋白質結合形成了保護層,專門阻止天然保濕因子的流失,保證角質層的含水量。 濕疹患者的皮膚正常屏障已經被破壞,所以相比較常人的皮膚而言,調節濕度的功能異常,更容易出現皮膚乾燥脫屑這些表現,此時需要內外同治,即調節臟腑功能結合外用藥膏清熱滋潤保濕,將皮膚屏障功能調節正常才能擁有健康皮膚。

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