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  • Photo Credit: Occult Museum

1. The Trouble with Nuns

2. The Deadly Dancing Mania

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    Photo Credit: Wikimedia Commons

3. The Tanganyika Laughers

4. The Muhnochwa

mass hysteria
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5. New York Tourette Epidemic

6. The Halifax Slasher Panic

mass hysteria
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  • Police questioned all kinds of people while looking for the Halifax Slasher

    Photo Credit: Stephenson / Topical Press Agency / Getty Images

7. The Twitching Outbreak

8. The Salem Witch Trials

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    Photo Credit: Wikimedia Commons