Did people really dance themselves to death in 1518?

Imagine walking through a medieval city in midsummer and seeing hundreds of people dancing in the street. No festival, no celebration, and for many of them, apparently no way to stop. It sounds like a fairy tale, but the dancing plague of 1518 is one of the best-documented strange events of its century.

The short answer

The dancing was real. Starting around 14 July 1518 in Strasbourg (then part of the Holy Roman Empire, now in France), dozens and possibly hundreds of people danced for days on end. Estimates range from 50 to 400 dancers. The famous claim that people danced to death is much shakier: the city’s own records from the time do not mention any deaths.

The real story

Most accounts say it began with one woman, usually named as Frau Troffea, who started dancing in the street outside her home and carried on for about a week. Within days others had joined her, and by August the outbreak had spread. Physicians, sermons, chronicles and city council notices all record that it happened, which is why historians take it seriously.

Here is the twist. The authorities’ first response was not to stop the dancing but to encourage it. Doctors of the day believed the problem was overheated blood, and the cure was to dance it out. So the city council handed over guild halls, set up stages in the horse and grain markets and even paid musicians to keep the beat going. It backfired badly. Onlookers took the spectacle as a sign of divine anger, and more people seemed to be swept up.

The council reversed course, banned public dancing and music, and sent the worst-affected to the shrine of Saint Vitus at Saverne. There they were given red shoes marked with crosses and sprinkled with holy water. By early September the outbreak had faded.

What caused it? One older theory blamed ergot, a fungus that grows on rye and can cause hallucinations. Historian John Waller, who wrote the best-known modern book on the event, rejects that idea, arguing that ergot poisoning would make it impossible to dance for days. He points instead to a kind of mass psychological contagion, fuelled by famine, disease and a deep fear of a vengeful saint.

Why people get it wrong

The line that “15 people a day were dying” is repeated all over the internet, and it does appear in some later accounts. But it isn’t found in the Strasbourg city records written at the time, and historians disagree about it. The deaths have become the headline because they make a gripping story, while the uncertainty gets quietly dropped.

People also tend to assume the whole thing must be legend. In fact, the dancing itself is among the more solidly recorded oddities of the period. It’s the body count, not the boogie, that deserves the question mark.

“The dancing’s real. The death toll? That’s the bit somebody added for drama, and it’s had a good run since.”