\n\n
下面详细做个介绍。
\n\n事实上,病毒感染可能是大多数儿童急性荨麻疹的原因。包括普通感冒病毒在内的很多病毒可能诱发急性荨麻疹。有时候,这种荨麻疹并不与感染同时发生,而在感染发病后一周、甚至更长时间才出现。皮疹多持续一两个星期后消失。
\n\n多种药物可能引起荨麻疹,其中最常见的有:
\n\n有些人在被昆虫如蜜蜂、黄蜂、红蚂蚁叮咬时,会在叮咬处“长”荨麻疹,如果蜇咬了很多处,还有可能诱发全身急性荨麻疹,严重时甚至出现严重过敏反应(包括过敏性休克)等危急情况,这时候需要尽快到医院看急诊。
\n\n食物相关的急性荨麻疹通常在食用“罪犯”食物后 30~60 分钟内出现。儿童中最容易导致荨麻疹的常见食物有牛奶、鸡蛋、花生和其他坚果、大豆和小麦,而成年人中最可能导致荨麻疹的食物有鱼、贝类、花生和其他坚果。
\n\n通过其他途径接触到致敏物质,也可能诱发荨麻疹,例如有些孩子对狗的皮屑过敏,他们在和小狗玩耍、或被小狗舔到(接触动物的唾液)后,就有可能出现荨麻疹。
\n\n有些人接触特殊的植物、生的水果蔬菜(例如桃毛、芒果)和乳胶(气球、橡胶手套、避孕套和其他橡胶制品等),会出现急性荨麻疹。
\n\n最后,我们回到开篇的问题,是不是所有得了急性荨麻疹的人都要做过敏原检查呢?答案是:不一定。如果发病经过很明显与某种过敏原相关,医生就可能建议在这次痊愈后做过敏原检查,比如皮肤点刺试验、抽血查 IgE 抗体等。查过敏原的目的是为将来避免接触提供依据,以免发生严重过敏反应。
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