\n\n
\n\n大金链子一戴,谁都不爱!
\n\n\n\n\n\n\n\n我家祖传铂金手环,大家随意看看,别太羡慕
\n\n\n\n(来源:自己拍的)
\n\n\n\n\n\n\n\n金银首饰,炫富首选
\n\n更是都市丽人们的潮流单品
\n\n但,一不小心,也可能成“翻车”现场
\n\n\n\n\n\n常州的高先生兴高采烈地送给妻子新买的“18K”(黄金含量至少达到75%的合金)黄金链子,谁知妻子体质特殊,戴其他金属制品都过敏,只对金银不过敏。
\n\n\n\n\n\n就这样,过敏的妻子,用脖子、手上密密麻麻的红疙瘩,亲身验证了此18K黄金不纯!高先生拿去质检,果然,买到的不是真金,而是“18KGp金”(俗称锻压金),属于其他金属合金,只是表面覆盖了镀金层。
\n\n\n\n这不,又是一场家庭风波……
\n\n\n\n\n\n\n\n\n\n\n\n\n\n金属过敏,在医学上被归入接触性皮炎(ACD)类疾病,多为金属离子与表皮细胞角质蛋白结合成完全抗原最终致敏[1]。
\n\n\n\n简单来说,就是皮肤把这些金属物质当作敌人处理,免疫细胞们团结起来,发起了免疫反应攻击,在你身体的直接表现就是“过敏”!
\n\n\n\n\n\n{来源:网络)
\n\n\n\n\n\n\n\n那就永远和首饰告别咯?金银:等等,别走……
\n\n\n\n金、银、钛等金属都具有较高的稳定性,所以很少会引发皮肤过敏。此外,纯银表面还会产生一层氧化银薄膜覆盖,更为稳定,也更加减少了致敏的几率。
\n\n\n\n其实,罪魁祸首是一个叫“镍”(符号Ni)的元素,由于镍具有良好的光泽度和抗腐蚀性能,在合金制品中常被用作镀层,而它恰恰却是过敏性接触性皮炎的第一大过敏物质。
\n\n\n\n在美国,镍过敏症在18岁及以下的女性中尤为多见[2]。不少人接触了镀镍的金属制品之后,接触部位会出现以下过敏症状[3][4]:
\n\n\n\n\n\n\n\n\n\n如果对镍的过敏反应非常严重,还可能导致鼻腔发炎或哮喘发作,或其他器官系统的症状。
\n\n\n\n\n\n金属过敏反应和季节有关吗?还真是。
\n\n\n\n夏天出汗多,人体汗水中的盐离子可以让金属元素离子化,大大增加了致敏的几率。
\n\n\n\n其次,因为夏天搭配衣服的需要,金属首饰在夏季亮相的机会更多。
\n\n\n\n\n\n{来源:某购物网站)
\n\n\n\n\n\n\n\n众多的仿真首饰,最便宜的只要2.5元……这就让廉价的镍有更多的机会走入“寻常百姓家”,中招的朋友也会更多。
\n\n\n\n比如我们最常见的耳钉,就让很多人入坑了。
\n\n\n\n{来源:网络)
\n\n\n\n\n\n\n\n而且夏天着装清爽单薄,皮肤更容易直接接触到含有镍的金属物质,比如牛仔裤扣、皮带的金属扣,甚至是手镯、发夹、手表、金属眼镜架等,都有可能含镍(很多人戴的牙套中也可能存在镍)。
\n\n\n\n甚至,使用电子产品也容易中招!据《华盛顿邮报》报道,美国一名11岁男孩反复发生过敏性皮疹,结果发现是日常生活中频繁使用的iPad金属外壳,其中的金属镍成分导致的[5]。
\n\n\n\n\n\n如果出现过敏反应,及时去医院,尽快控制过敏反应。随后“斑贴试验”就会登场,这是皮肤科辅助诊断变态反应性疾病和测试过敏原的重要手段。
\n\n\n\n将少量的各种过敏原(其中就包括金属镍)贴放在背部皮肤,并用胶布覆盖它们,保留48小时,并观察判断患者是否对一种或多种过敏原产生过敏反应。
\n\n\n\n当然,在一些特殊情况下,也可能需要更多测试来进一步确定过敏原因。
\n\n\n\n\n\n\n\n\n\n\n\n经过医生面诊和斑贴试验,已经确定了自己对金属镍过敏,应该怎么办呢?不戴伪劣首饰就够了吗?
\n\n\n\n非也。除了上面提到的,即使是佩戴纯金首饰,也很可能对配件中的金属钩或焊料中的镍产生过敏反应。
\n\n\n\n海鲜、坚果和巧克力也含有镍,高度敏感者应忌食。
\n\n\n\n另外,电饭锅内胆也含有镍,严重过敏者也应避免使用。
\n\n\n\n\n\n\n\n还有一点容易被大家忽略的,也是需要强调的是出汗。没出汗,可能啥事没有,一出汗,事情就不简单了。汗水中的盐离子,会使这些金属元素更加活泼(离子化),所以也更容易致敏。
\n\n\n\n\n\n\n\n朋友们,听一句劝,黄金市场的价格已经非常透明了,那些明显低于市价的黄金首饰就不要买啦。网购10块钱包邮的,更是要避之不及!真金白银这样的首饰,别说成本了,怕是连个好点的镀层都远不止10元钱……
\n\n\n\n\n\n{来源:网络)
\n\n\n\n\n\n\n\n购买金银首饰还是建议到正规商店购买,也是最大程度上保护自己,避免金属过敏的发生。
\n\n\n\n\n\n“过敏”是一种常见的疾病,却也是一种略带“玄学”的疾病。
\n\n\n\n同样一种花粉,于你是迷人香味,于他人却可能是喷嚏不断,鼻涕横流;同样一种食品,于你是人间美味,于他人可能是穿肠毒药(过敏界的大佬——花生,过敏严重起来可是致命的)。
\n\n\n\n作为医学界无比庞杂的课题,过敏的神秘与莫测,不仅在于地球上70亿人不同机理的复杂性,还在于花花草草、烟火尘埃这些无比多的过敏原的存在,个体的差异化、过程的复杂化,是需要时间去研究的。
\n\n\n\n人类所了解的过敏反应,也许只是冰山一角。要说治愈,路漫漫其修远兮。
\n\n\n\n那么过敏的我们是否只能坐等过敏呢?
\n\n\n\n并不是的!我们能做的最简单的保护自己的方法,就是远离过敏原。金属过敏,同样如此!
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