While you obviously can't avoid an element that covers 70% of the planet and falls from the sky, people with aquagenic urticaria have to take some serious precautions when carrying out basic everyday tasks.

虽然您显然无法避免一种覆盖地球 70% 并从天而降元素，患有水源荨麻疹人在执行基本日常任务时必须采取一些预防措施。

In solar urticaria, that same process seems to happen, but the molecule that’s causing the immune system freakout is a mystery.

在日光荨麻疹中，同样过程似乎也会发，发免疫系统异常反应分子仍然是个谜。

Instead of showing up almost immediately, like solar urticaria, it can take hours or even days and it sticks around for a while, too.

与日光荨麻疹几乎立即出现不同，它可能需要几小时甚至几天时间才会出现， 并且还会持续一段时间。

Unfortunately, this is reality for people with an extremely rare allergy to water called aquagenic urticaria.

不幸是，对于水源荨麻疹这种极为罕见水过敏症患者来说，这是现实。

If you have a condition called solar urticaria, big, itchy welts develop within minutes of sun exposure.

如果你患有日光荨麻疹，皮肤会在晒太阳几分钟后出现大面积瘙痒肿块。