Medieval Europe is often reduced to a single sentence in popular histories of epilepsy: people believed seizures were caused by demons. That version is too simple.
Supernatural interpretations certainly existed. Biblical stories, sermons, miracle collections and religious imagery could connect convulsive attacks with possession, spiritual danger or divine intervention. Exorcism and prayer were sometimes used. But medieval Europeans also inherited Greco-Roman medical ideas, recognised bodily causes, used physicians and remedies, founded hospitals and sought the intercession of saints without necessarily believing every seizure was demonic.
The history is therefore not a straight choice between ‘religion’ and ‘medicine’. For many people, several explanations could coexist.
Why the stereotype is misleading
The image of the Middle Ages as a period in which all illness was blamed on sin or demons was strengthened by later writers who contrasted medieval religion with modern science. Historical evidence is more mixed.
A study of pre-Crusade chronicles and saints’ lives found that only a minority of descriptions of mental disorder, possession, alcoholism and epilepsy explicitly attributed illness to sin or wrongdoing. Medieval authors could also mention bodily imbalance, diet, alcohol, overwork, grief and other natural causes.
This does not mean supernatural interpretations were rare. It means that medieval thought was more plural than the stereotype suggests.
The biblical background
Christian interpretations of seizures were influenced by biblical passages in which a child with dramatic convulsive symptoms is described as afflicted by a spirit. In the Gospel narratives, the child falls, convulses, foams and is thrown into dangerous situations before being healed by Jesus.
Later readers sometimes treated these descriptions as evidence that epilepsy itself was demonic possession. Modern historians and clinicians have warned against collapsing the categories so easily. The texts are religious narratives, not neurological case reports, and ancient language about spirits does not map neatly onto modern diagnosis.
Nevertheless, the imagery became culturally powerful. In medieval Christian Europe, seizure-like attacks could be interpreted through a framework in which spiritual forces were real and potentially active in human illness.
Possession and epilepsy were not identical categories
Even within medieval religious culture, possession and epilepsy were not always treated as the same thing.
Some texts distinguished ordinary illness from extraordinary spiritual affliction. Physicians could diagnose a bodily disorder while clergy considered whether an event had religious significance. The boundaries were unstable, but they were not completely absent.
That distinction matters because later histories sometimes imply that a person with epilepsy would automatically have been labelled possessed. Surviving sources do not support such a universal rule.
The ‘falling sickness’
One of the most enduring European names for epilepsy was the ‘falling sickness’. Similar terms appeared in several languages and focused on one of the most visible features of some seizures: sudden collapse.
The name did not describe all seizure types, and it could also be used loosely for disorders involving falls or convulsions. Medieval terminology therefore cannot simply be translated into a modern epilepsy diagnosis every time the phrase appears.
Still, the expression became deeply embedded in European medical, religious and popular language.
Why saints became associated with epilepsy
Medieval Christianity developed an extensive culture of saintly intercession. Particular saints became associated with particular illnesses, occupations, dangers or parts of the body.
People sought help through prayer, pilgrimage, relics, feast days, blessings, images and objects associated with a saint. For epilepsy, this produced an unusually large number of patron saints across different regions.
The practice did not necessarily mean that the illness was thought to be caused by the saint or by a demon. A person could believe an illness had a bodily cause while also asking a saint to intercede for recovery.
Saint Valentine and the falling sickness
Saint Valentine became one of the best-known Christian patrons associated with epilepsy, particularly in central Europe and German-speaking regions.
From the later Middle Ages onward, artworks frequently depict Valentine with a person in collapse, convulsion or a post-seizure state. A systematic study identified hundreds of images of Saint Valentine across European countries, many containing figures with features interpreted as seizure-like.
In some regions epilepsy was popularly called ‘Saint Valentine’s disease’. Pilgrimages were made to churches or shrines associated with his relics, and sufferers or their families sought protection or healing through devotion.
The association appears to have developed through several traditions rather than one securely documented historical event. Later explanations connected Valentine with miraculous healing stories and, in German-speaking areas, with wordplay linking his name to falling.
Relics, shrines and pilgrimage
Medieval pilgrimage was not simply tourism to a holy site. Pilgrims travelled in the hope of spiritual benefit, forgiveness, healing or intercession.
For people living with recurrent seizures, a shrine offered something that ordinary medicine often could not: a place where unpredictable illness could be given meaning and where hope could be organised around ritual.
Relics might be touched, approached, carried in procession or incorporated into prayers and blessings. Votive offerings could be left after perceived healing. Miracle collections sometimes recorded cures attributed to saintly intervention.
These accounts are valuable historical evidence for belief and practice, but they cannot be treated as clinical proof that epilepsy was cured.
Saint John and epilepsy in Britain
British traditions also linked Saint John, especially Saint John the Baptist, with protection against the falling sickness.
Late medieval jewellery and devotional objects bearing his image have been interpreted as protective objects. Some surviving fifteenth-century rings depicting Saint John appear to have been worn as personal devotional or prophylactic items.
Later antiquarian sources record folk practices invoking Saint John against epilepsy, including rituals associated with his feast day. Because many descriptions were written down after the medieval period, historians need to distinguish securely medieval evidence from customs preserved or reported later.
Even so, the association shows that patronage varied geographically. Saint Valentine was important, but he was never the only saint connected with seizures.
Many saints, not one universal patron
Historical sources associate epilepsy with numerous saints across Europe. These include Saint Valentine, Saint John the Baptist, Saint Vitus, Saint Dymphna, Saint Bibiana, Saint Bridget, Saint Vincent Ferrer, Saint Donatus and others.
The Three Kings or Magi also appeared in protective traditions.
This diversity reflects the local nature of medieval devotion. A village, monastery, region or pilgrimage centre might develop its own healing tradition around a saint whose relics, legends or cult were locally important.
Saint Vitus and the problem of overlapping disorders
Saint Vitus became associated with disorders involving abnormal movement, especially the condition later called Saint Vitus’ dance.
Historical descriptions of shaking, dancing, spasms and convulsions could encompass several very different conditions. Epilepsy, chorea, functional movement disorders, collective behavioural phenomena and other illnesses were not always clearly separated.
This is one reason retrospective diagnosis from medieval descriptions must remain cautious.
Exorcism
Exorcism formed part of Christian practice for cases believed to involve demonic influence. When seizure-like attacks were interpreted as possession, exorcism might be used alongside prayer, fasting, holy water, relics or other religious interventions.
However, the existence of exorcism does not demonstrate that it was the routine treatment for every person with recurrent seizures.
Medical texts continued to circulate. Monastic and lay healers used herbal and dietary remedies. Learned medicine retained humoral explanations inherited from antiquity. The same society could contain exorcists, physicians, folk healers and shrine cults.
Medical ideas did not disappear after Rome
Greek and Roman medicine did not vanish at the beginning of the Middle Ages. Medical works circulated in Latin, Greek and later in translations influenced by Arabic scholarship.
Humoral medicine remained central to learned explanations of disease. Epilepsy could be attributed to disturbances involving the brain, phlegm, bodily fluids or obstruction rather than purely supernatural agency.
Those theories were scientifically wrong by modern standards, but historically they were naturalistic medical explanations.
This continuity is important because it prevents the false picture of a thousand-year gap in which medical thinking simply stopped.
Monasteries, hospitals and care
Religious institutions were important providers of care in medieval Europe. Monasteries, charitable houses and hospitals offered food, shelter, nursing and spiritual support.
But access was uneven. Some medieval hospitals excluded people with particular chronic conditions because they were not equipped to care for them.
The statutes of the Hospital of Saint John at Bridgwater in England, drawn up in 1219, reportedly excluded people with the ‘falling sickness’ alongside several other categories of patient. Such rules do not prove that epilepsy was universally considered contagious. They can also reflect institutional limits, fear of disruptive illness and the specialised purposes of particular hospitals.
Still, exclusion from care is an important part of epilepsy’s social history.
Was epilepsy considered contagious?
Ideas resembling contagion appear in the history of epilepsy long before and after the medieval period. Fear of saliva, breath, bodily contact or spiritual pollution could encourage avoidance.
But medieval concepts of contagion did not correspond exactly to germ theory. Physical transmission, ritual pollution and supernatural influence could overlap.
It is therefore safer to say that some people feared proximity to seizure disorders than to claim that medieval Europeans uniformly believed epilepsy was an infectious disease.
Amulets, rings and protective objects
Religious jewellery could serve devotional and protective functions. Rings, pendants, inscriptions and saintly images were sometimes worn in hopes of protection from disease.
Objects depicting Saint John and other saints have been linked with protection against falling sickness. Later English traditions also included blessed rings associated with protection from cramp and epilepsy.
The boundary between religion, medicine and magic was not sharp. A blessed object could be understood as a legitimate devotional aid by one person and as superstition by another.
Prayer and medicine could be used together
Modern accounts often assume that someone either prayed or sought medical treatment. Medieval practice was not necessarily organised that way.
A family might consult a physician, use herbs, alter diet, make a pilgrimage and ask a saint for help. These actions addressed different aspects of illness within the worldview of the time.
Religious care could also provide community support in circumstances where effective medical treatment was extremely limited.
Images of seizures in medieval and early modern art
Religious art offers unusually rich evidence for the cultural visibility of epilepsy.
Paintings, carvings and frescoes associated with healing saints sometimes depict people falling, stiffening, twisting or lying unconscious. Modern researchers have tried to classify the apparent seizure types shown in these works.
Some images contain striking anatomical detail, but such interpretations remain retrospective. Artists could stylise bodies, copy earlier images or represent symbolic possession rather than document a witnessed seizure.
The safest use of the artwork is historical: it shows that convulsive illness was recognisable enough to become a recurring visual attribute of saints associated with healing.
The danger of reading every miracle as epilepsy
Medieval miracle collections contain accounts of people collapsing, becoming rigid, losing speech, behaving strangely or recovering after prayer.
Some may describe epilepsy. Others could represent syncope, fever, functional seizures, intoxication, psychiatric illness, movement disorders or literary conventions.
Without modern clinical evidence, certainty is impossible.
This is especially important when historical religious figures themselves are retrospectively labelled as having epilepsy. Modern reviews urge caution because surviving descriptions are often too limited or symbolic for diagnosis.
Stigma, fear and charity existed together
People with seizures could encounter fear, exclusion and spiritual suspicion. They could also be objects of charity, care and religious compassion.
These responses were not mutually exclusive. A community might fear the dramatic appearance of a seizure while still believing it had a duty to care for the sufferer.
The history of epilepsy in medieval Europe is therefore neither a simple history of persecution nor a simple history of benevolent care.
Did the Church ’cause’ medieval epilepsy stigma?
Religious narratives sometimes reinforced associations between seizures and demonic possession, and these associations contributed to stigma. But it would be historically inaccurate to treat the medieval Church as a single institution imposing one explanation everywhere for a thousand years.
Christian institutions also preserved medical manuscripts, operated hospitals, provided nursing and developed extensive traditions of care for the sick.
Within Christianity itself there were competing interpretations of illness, and practices varied by century, region and institution.
Why the idea of possession was so powerful
Seizures could be sudden, dramatic and difficult to predict. A person might fall, stiffen, shake, cry out, foam, become unresponsive and later awaken with little memory of what had happened.
Before neurological mechanisms could be investigated, such changes in consciousness and behaviour demanded explanation.
Possession offered one culturally available explanation for a body that appeared temporarily controlled by something outside the person’s will.
That does not make medieval observers foolish. It shows how human beings interpret unfamiliar events through the explanatory systems available to them.
Why saintly intercession mattered
The devotion to epilepsy saints was not only about causation. It was also about living with uncertainty.
Recurrent seizures could not be reliably prevented. Families did not know when the next attack would occur. Injuries could be severe, and effective medication did not exist.
A saint’s shrine, feast day or relic offered a structure for hope. Pilgrimage turned an uncontrollable illness into an action that could be taken. Prayer created a language through which sufferers and families could ask for protection.
Understanding that function helps explain why these traditions endured even alongside medical treatment.
From medieval patronage to later European folklore
Many saintly traditions associated with epilepsy did not end with the Middle Ages. They continued through the Renaissance, early modern period and in some regions much later.
This creates a dating problem. A custom recorded in the seventeenth or nineteenth century may preserve an older tradition, but historians cannot automatically project every later folk practice backward into the medieval period.
For that reason, this page distinguishes medieval evidence from later traditions whenever possible.
What changed by the end of the Middle Ages?
There was no single moment when medieval supernatural belief ended and modern medicine began.
From the late medieval into the Renaissance period, European medical writing expanded, universities developed, classical texts circulated more widely and physicians produced increasingly detailed discussions of seizure disorders.
Religious healing practices nevertheless continued. Saintly patronage and medical investigation overlapped for centuries.
The central historical lesson
Medieval Europe should not be described as a place where epilepsy simply meant demonic possession.
A more accurate picture contains several layers at once: possession narratives, saintly intercession, pilgrimage, relics, protective objects, humoral medicine, physicians, hospitals, exclusion, charity and regional folklore.
Saint Valentine became a major patron of people with epilepsy in parts of Europe. Saint John and many other saints were invoked elsewhere. Exorcism could be used when possession was suspected. Medical explanations continued to exist.
The result was not one medieval belief about epilepsy, but a changing landscape of beliefs and practices that differed across place, time and social setting.
Sources and further reading
Mameniškienė R, Puteikis K, Carrizosa-Moog J. Saints, demons, and faith — a review of the historical interaction between Christianity and epilepsy. Epilepsy & Behavior. 2022.
Magiorkinis E et al. Epilepsy during the Middle Ages, the Renaissance and the Enlightenment. Journal of Neurology. 2010.
Kluger G, Kudernatsch V. St. Valentine — patron saint of epilepsy: illustrating the semiology of seizures over six centuries. Epilepsy & Behavior. 2009.
Tambourgi PV, Li LM, Sander JW. Saint Valentine and Epilepsy: from Medieval Devotion to Modern Global Advocacy. Arquivos de Neuro-Psiquiatria. 2026.
Fatović-Ferenčić S, Dürrigl MA. The sacred disease and its patron saint. Epilepsy & Behavior. 2001.
Kroll J, Bachrach B. Sin and mental illness in the Middle Ages. Psychological Medicine. 1984.
Epilepsy, eponyms and patron saints: historical review of Western traditions.
Kaper A. The iconography of St John the Baptist in medieval England, c.1300–1550. University of St Andrews.
Historical evidence checked: September 2026.