Dancing Plague of 1518
The Dancing Plague (or Dance Epidemic) of 1518 was a case of dancing mania that occurred in Strasbourg, France (then part of the Holy Roman Empire) in July 1518. Numerous people took to dancing for days without rest, and, over the period of about one month, most of the people died from heart attack, stroke, or exhaustion. (via lamusiqueestlavie)
Holy shit. I want to use this somehow. Dancing mania. Mass psychogenic illness. (not to be confused with mass naked child events)