Mad Hatter Disease: The History & The Manifestation - MEDizzy
How Poisonous Chemicals Created The Phrase 'Mad Hatter' | Discover Magazine
Mad Hatter Syndrome
The science behind the mercury poisoning in S-town | Daily Mail Online
Mad World of a Hatter
The condition was characterized by slurred speech, tremors, stumbling, in extreme cases, hallucinations, and drinking shitloads of tea. : r/HistoryMemes