Dancing Plague of 1518
Encyclopedia
The Dancing Plague of 1518 was a case of dancing mania
Dancing mania
Dancing mania was a social phenomenon that occurred primarily in mainland Europe between the 14th and 17th centuries. It involved groups of people, sometimes thousands at a time, who danced uncontrollably and bizarrely...

 that occurred in Strasbourg
Strasbourg
Strasbourg is the capital and principal city of the Alsace region in eastern France and is the official seat of the European Parliament. Located close to the border with Germany, it is the capital of the Bas-Rhin département. The city and the region of Alsace are historically German-speaking,...

, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 (then part of the Holy Roman Empire
Holy Roman Empire
The Holy Roman Empire was a realm that existed from 962 to 1806 in Central Europe.It was ruled by the Holy Roman Emperor. Its character changed during the Middle Ages and the Early Modern period, when the power of the emperor gradually weakened in favour of the princes...

) in July 1518. Numerous people took to dancing for days without rest, and, over the period of about one month, some of the people died from heart attack, stroke
Stroke
A stroke, previously known medically as a cerebrovascular accident , is the rapidly developing loss of brain function due to disturbance in the blood supply to the brain. This can be due to ischemia caused by blockage , or a hemorrhage...

, or exhaustion.

Events

The outbreak began in July 1518, when a woman, Frau Troffea, began to dance fervently in a street in Strasbourg. This lasted somewhere between four to six days. Within a week, 34 others had joined, and within a month, there were around 400 dancers. Some of these people eventually died from heart attack, stroke, or exhaustion.

Historical documents, including "physician notes, cathedral sermons, local and regional chronicles, and even notes issued by the Strasbourg city council" are clear that the victims danced. It is not known why these people danced to their deaths.

As the dancing plague worsened, concerned nobles sought the advice of local physicians, who ruled out astrological and supernatural
Supernatural
The supernatural or is that which is not subject to the laws of nature, or more figuratively, that which is said to exist above and beyond nature...

 causes, instead announcing that the plague was a "natural disease" caused by "hot blood." However, instead of prescribing bleeding
Bloodletting
Bloodletting is the withdrawal of often little quantities of blood from a patient to cure or prevent illness and disease. Bloodletting was based on an ancient system of medicine in which blood and other bodily fluid were considered to be "humors" the proper balance of which maintained health...

, authorities encouraged more dancing, in part by opening two guildhalls and a grain market, and even constructing a wooden stage. The authorities did this because they believed that the dancers would only recover if they danced continuously night and day. To increase the effectiveness of the cure, authorities even paid for musicians to keep the afflicted moving. Some of the dancers were taken to a shrine, where they sought a cure for their affliction.

Mass psychogenic illness

Historian John Waller thinks that the dancing epidemic was caused by mass psychogenic illness
Mass Psychogenic Illness
Mass psychogenic illness , also called mass sociogenic illness, is “the rapid spread of illness signs and symptoms affecting members of a cohesive group, originating from a nervous system disturbance involving excitation, loss or alteration of function, whereby physical complaints that are...

 (MPI), a manifestation of mass hysteria that is often preceded by extreme levels of psychological distress. Waller states that famine had been prevalent in the region for some time, caused by very cold winters, very hot summers, crop frost
Frost
Frost is the solid deposition of water vapor from saturated air. It is formed when solid surfaces are cooled to below the dew point of the adjacent air as well as below the freezing point of water. Frost crystals' size differ depending on time and water vapour available. Frost is also usually...

s, and violent hail
Hail
Hail is a form of solid precipitation. It consists of balls or irregular lumps of ice, each of which is referred to as a hail stone. Hail stones on Earth consist mostly of water ice and measure between and in diameter, with the larger stones coming from severe thunderstorms...

storms. Mass deaths followed from malnutrition, and those who survived were forced to kill their farm animals, take out loans, and perhaps even beg in the streets. In addition to food shortages, diseases such as smallpox
Smallpox
Smallpox was an infectious disease unique to humans, caused by either of two virus variants, Variola major and Variola minor. The disease is also known by the Latin names Variola or Variola vera, which is a derivative of the Latin varius, meaning "spotted", or varus, meaning "pimple"...

, syphilis
Syphilis
Syphilis is a sexually transmitted infection caused by the spirochete bacterium Treponema pallidum subspecies pallidum. The primary route of transmission is through sexual contact; however, it may also be transmitted from mother to fetus during pregnancy or at birth, resulting in congenital syphilis...

, leprosy
Leprosy
Leprosy or Hansen's disease is a chronic disease caused by the bacteria Mycobacterium leprae and Mycobacterium lepromatosis. Named after physician Gerhard Armauer Hansen, leprosy is primarily a granulomatous disease of the peripheral nerves and mucosa of the upper respiratory tract; skin lesions...

, and "the English sweat" (a new disease) afflicted the populace, as well as "spiritual despair on a scale unknown for generations." This series of events might have triggered the MPI.

Ergotism

It has been suggested that the cause of the plague was ergotism
Ergotism
Ergotism is the effect of long-term ergot poisoning, traditionally due to the ingestion of the alkaloids produced by the Claviceps purpurea fungus which infects rye and other cereals, and more recently by the action of a number of ergoline-based drugs. It is also known as ergotoxicosis, ergot...

, which results from consuming ergot
Ergot
Ergot or ergot fungi refers to a group of fungi of the genus Claviceps. The most prominent member of this group is Claviceps purpurea. This fungus grows on rye and related plants, and produces alkaloids that can cause ergotism in humans and other mammals who consume grains contaminated with its...

-laced bread. Ingestion of ergot, a psychotropic mold that grows on rye
Rye
Rye is a grass grown extensively as a grain and as a forage crop. It is a member of the wheat tribe and is closely related to barley and wheat. Rye grain is used for flour, rye bread, rye beer, some whiskeys, some vodkas, and animal fodder...

, can lead to delirium
Delirium
Delirium or acute confusional state is a common and severe neuropsychiatric syndrome with core features of acute onset and fluctuating course, attentional deficits and generalized severe disorganization of behavior...

, hallucination
Hallucination
A hallucination, in the broadest sense of the word, is a perception in the absence of a stimulus. In a stricter sense, hallucinations are defined as perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, in that they are vivid,...

s, and seizure
Seizure
An epileptic seizure, occasionally referred to as a fit, is defined as a transient symptom of "abnormal excessive or synchronous neuronal activity in the brain". The outward effect can be as dramatic as a wild thrashing movement or as mild as a brief loss of awareness...

s, as well as other symptoms. While today this is called ergotism, contemporaneously it was known as "Saint Anthony
Anthony the Great
Anthony the Great or Antony the Great , , also known as Saint Anthony, Anthony the Abbot, Anthony of Egypt, Anthony of the Desert, Anthony the Anchorite, Abba Antonius , and Father of All Monks, was a Christian saint from Egypt, a prominent leader among the Desert Fathers...

's fire." However, another symptom of ergotism is loss of blood supply to the limbs, making coordinated movement like dancing difficult; as such, Waller considers it to be an unlikely cause of the plague.

Ecstatic ritual

Sociologist Robert Bartholomew of James Cook University
James Cook University
James Cook University is a public university based in Townsville, Queensland, Australia. The university has two Australian campuses, located in Townsville and Cairns respectively, and an international campus in Singapore. JCU is the second oldest university in Queensland—proclaimed in 1970—and the...

 in Australia contends that the dance was part of an "ecstatic ritual
Religious ecstasy
Religious ecstasy is an altered state of consciousness characterized by greatly reduced external awareness and expanded interior mental and spiritual awareness which is frequently accompanied by visions and emotional/intuitive euphoria...

 of a heretical
Christian heresy
Christian heresy refers to non-orthodox practices and beliefs that were deemed to be heretical by one or more of the Christian churches. In Western Christianity, the term "heresy" most commonly refers to those beliefs which were declared to be anathema by the Catholic Church prior to the schism of...

 sect." This explanation is questioned by Waller, who believes "there is no evidence that the dancers wanted to dance," citing recorded evidence that the dancers showed expressions of "fear and desperation."

Chorea

Chorea, which can be present in epilepsy or a variety of other nervous system disorders, can be characterised by quick, patterned muscular contractions, or sometimes slower, stormy, writhing motions (athetosis). In a 1931 Time
Time (magazine)
Time is an American news magazine. A European edition is published from London. Time Europe covers the Middle East, Africa and, since 2003, Latin America. An Asian edition is based in Hong Kong...

article, it was suggested that victims of "Saint Vitus's dance" (in this context, Sydenham's chorea)—who are most often children—were brought before images of St. Vitus when they were stricken with convulsions. Saint Vitus's dance has become the term used for the dancing mania
Dancing mania
Dancing mania was a social phenomenon that occurred primarily in mainland Europe between the 14th and 17th centuries. It involved groups of people, sometimes thousands at a time, who danced uncontrollably and bizarrely...

s of medieval times (as well as for Sydenham's chorea
Sydenham's chorea
Sydenham's chorea or chorea minor is a disease characterized by rapid, uncoordinated jerking movements affecting primarily the face, feet and hands. Sydenham's chorea results from childhood infection with Group A beta-hemolytic Streptococci and is reported to occur in 20-30% of patients with...

 or chorea
Chorea (disease)
Choreia is an abnormal involuntary movement disorder, one of a group of neurological disorders called dyskinesias. The term choreia is derived from the Greek word χορεία , see choreia , as the quick movements of the feet or hands are vaguely comparable to dancing or piano playing.The term...

 in general). Saint Vitus
Vitus
Saint Vitus was a Christian saint from Sicily. He died as a martyr during the persecution of Christians by co-ruling Roman Emperors Diocletian and Maximian in 303. Vitus is counted as one of the Fourteen Holy Helpers of the Roman Catholic Church....

 is primarily invoked to protect against epilepsy
Epilepsy
Epilepsy is a common chronic neurological disorder characterized by seizures. These seizures are transient signs and/or symptoms of abnormal, excessive or hypersynchronous neuronal activity in the brain.About 50 million people worldwide have epilepsy, and nearly two out of every three new cases...

, a disorder characterised by recurrent unprovoked seizures.

Catholic legend says that invoking the wrath of St. Vitus could provoke compulsive dancing (or that dancing before an image of St. Vitus would imbue good health for the following year). However, this explanation does not support how so many cases of chorea could arise simultaneously in the population, nor how so many adults were affected.

External links

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