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phenomenaStrasbourg, Alsace (then in the Holy Roman Empire; now France)·July–September 1518·5 min read

The Dancing Plague of Strasbourg, 1518

In the summer of 1518, a woman in Strasbourg began dancing in the street and could not stop. Within weeks dozens — and by some accounts up to 400 people — were dancing compulsively for days on end, some reportedly until they collapsed or died. The episode is firmly attested in city-council minutes, physician notes, cathedral sermons, and regional chronicles. It is not a hoax or a pure legend: something genuinely strange happened. The best modern explanation is mass psychogenic illness ("psychic contagion") fueled by famine, disease, and a widespread belief in St. Vitus's curse, rather than a supernatural cause or ergot poisoning.

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In the summer of 1518, a woman in Strasbourg began dancing in the street and could not stop. Within weeks dozens — and by some accounts up to 400 people — were dancing compulsively for days on end, some reportedly until they collapsed or died. The episode is firmly attested in city-council minutes, physician notes, cathedral sermons, and regional chronicles. It is not a hoax or a pure legend: something genuinely strange happened. The best modern explanation is mass psychogenic illness ("psychic contagion") fueled by famine, disease, and a widespread belief in St. Vitus's curse, rather than a supernatural cause or ergot poisoning.

A fuller write-up of the documentation and analysis is in progress.

Sources

Tagged by proximity to the event. Primary sources are direct or contemporaneous; tertiary are downstream retellings.

  1. 1.
    Tertiarywebsite

    "Dancing plague of 1518", Wikipedia

    Encyclopedic overview; notably explicit that contemporary 1518 records document the dancing but not the death tolls, which derive from later accounts.

  2. 2.
    Secondarynews

    "What caused Strasbourg's dancing plague of 1518?", National Geographic

    Synthesizes scholarly views (Waller, Dickason, Renberg) favoring mass psychogenic illness and detailing the objections to the ergotism theory.

  3. 3.
    Secondaryacademic

    Ned Pennant-Rea, "The Dancing Plague of 1518", The Public Domain Review

    Source-critical essay tracing the primary chronicles (Schilter, Specklin, Paracelsus) and stating plainly that the final death toll is unknown.

  4. 4.
    Secondarybook

    John Waller, "The Dancing Plague: The Strange, True Story of an Extraordinary Illness", Sourcebooks, 2008

    Waller is the leading modern historian of the event; argues for mass psychogenic illness and critiques the ergotism hypothesis (also summarized via Britannica and his Lancet work).

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