健康与养生过敏指的是我们本身的免疫系统因响应于某些外来物质并夸大反应，这些外来物质通常是无害可见的，当我们部分的免疫系统对其发生反应时，我们的身体就会试图摆脱“过敏原”（异物），就好比我们常见的打喷嚏，发痒，流泪和流鼻涕，鼻塞症状等都是一些过敏的症状。 在日常生活中，我们的皮肤经常会接触到各种物质，尤其是细菌和杂质更加会使我们的皮肤出现不适，进而引发各种皮肤病，比如湿疹。湿疹是一种过敏性皮肤病，会使患者浑身骚痒，而过度地抓挠会损伤皮肤。很多人都会有这样疑惑，为什么会得湿疹？又该如何预防湿疹的发生呢？
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