It was because of the mercury and it became known as mad hatter disease.

这是由于水银的缘故，它被称为疯帽匠病。

But the price they paid for dapper hats was mercury poisoning, which drastically harmed hatters’ central nervous systems. Mercurial disease, or Mad Hatter Disease, causes extreme emotional states plus physical effects, like tremors and difficulty walking, speaking, and writing.

但他们为精致的帽子付出的代价是汞中毒，这极大地损害了帽匠的中枢神经系统。 Mercurial 病或 Mad Hatter 病会导致极端的情绪状态和身体影响，如颤抖和行走、说话和写作困难。