What Witchcraft Is Facebook? [View all]

Mass psychogenic illness—historically known as "mass hysteria"—is making a comeback.

“Eerie and remarkable.”

Those are the words that Robert Bartholomew used to describe this past winter’s outbreak of mass hysteria in Danvers, Massachusetts, a town also known as “Old Salem” and “Salem Village.”

Bartholomew, a sociologist in New Zealand who has been studying cases of mass hysteria for more than 20 years, was referring to the Salem Witch Trials of 1692-1693, the most widely recognized episode of mass hysteria in history, which ultimately saw the hanging deaths of 20 women.

Fast-forward about 300 years to January 2013, when a bizarre case of mass hysteria again struck Danvers. About two dozen teenagers at the Essex Agricultural and Technical School began having “mysterious” hiccups and vocal tics.

http://www.theatlantic.com/health/archive/2013/09/what-witchcraft-is-facebook/279499/