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Dancing Plague of 1518

People danced until they dropped dead. It started with one woman. Soon hundreds were dancing uncontrollably. They couldn't stop. Some died of exhaustion, strokes, heart attacks. What caused the Dancing Plague?

July 1518
Strasbourg, Alsace
400+ witnesses

The Dancing Plague of 1518 was a case of mass hysteria in which people danced for days without rest, with some dying from exhaustion.

The Event

According to documented history:

In July 1518:

  • Frau Troffea began dancing in the street
  • She continued for days
  • Others joined her
  • By August, 400 people were dancing
  • Some died from the exertion

The Outbreak

The dancing:

  • Started with one woman
  • Spread to dozens, then hundreds
  • Continued day and night
  • People couldn’t stop
  • Deaths occurred from heart attacks and strokes

Official Response

Authorities:

  • Initially encouraged more dancing
  • Built a stage
  • Hired musicians
  • Eventually moved dancers to a shrine
  • The outbreak eventually ended

Similar Events

Other dancing plagues occurred:

  • 1374 along the Rhine
  • 1278 in Germany
  • Multiple incidents over centuries
  • All in the same general region

Explanations

Proposed causes:

  • Mass psychogenic illness (mass hysteria)
  • Ergot poisoning (from infected grain)
  • Stress-induced collective behavior
  • Religious ecstasy
  • Social contagion

Modern Analysis

Historians suggest:

  • The region was under severe stress
  • Famine and disease were common
  • Belief in Saint Vitus’s curse was strong
  • Psychological and cultural factors combined

Sources