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

不幸的是，对于水麻疹这种极为罕见的水过敏症患者来说，这是现实。

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

如果您患有日光麻疹，露在阳光下几分钟内就会出现又大又痒的伤痕。

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

在日光麻疹中，似乎会发的过程，但导致免疫系统崩溃的分子是一个谜。

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

它不会像日光麻疹那几乎立即出现，而是可能需要数小时甚至数天， 并且还会持续一段时间。