The Most Disturbing Royal Birth Defects Ever Documented

Added: 2026-05-03

[00:00:00]Tutankhamun, the boy king of Egypt's 18th dynasty, was buried with 130 walking canes. And for a long time, historians assumed they were ceremonial symbols of power, rather than tools of survival. They were not. CT scans and DNA analysis conducted in 2010 and published in the Journal of the American Medical Association revealed that Tutankhamun was a young man whose body was quietly collapsing from the inside, the product of generations of deliberate inbreeding within the royal line. His parents are now believed to have been siblings. DNA matched two unidentified mummies, designated KV35YL and KV35EL, as his probable mother and father, and the result was a genetic catastrophe compressed into a reign that lasted less than a decade. He had Kohler's disease, too, a condition in which the bones of the foot begin to die from interrupted blood supply, leaving the tissue dark, necrotic, and structurally unreliable.

[00:00:54]His left foot was clubbed, twisting the limb inward and downward, so that walking on flat ground was a constant managed negotiation with pain. He also had scoliosis of the spine and, according to some analyses, a cleft palate. Multiple strains of Plasmodium falciparum malaria were confirmed in his remains, and the combination of bone disease, spinal deformity, immune compromise, and parasitic infection likely killed him around age 18 or 19.

[00:01:21]The golden funeral mask that made him famous shows a serene, perfect face, symmetrical, ageless, almost divine.

[00:01:29]Beneath the linen wrappings was a withered, deformed foot attached to a teenager who ruled an empire he could barely walk across. King Charles II of Spain. If you wanted to design a human being with the maximum possible genetic damage through inbreeding alone, and you had several generations to work with, you might end up with something close to Charles II of Spain, and the Habsburg dynasty essentially did exactly that without meaning to. By the time Charles was born in 1661, the family tree had folded back on itself so many times that geneticists calculating his inbreeding coefficient in a 2009 PLoS One study arrived at a figure of 0.254, which is higher than the coefficient expected from a direct sibling pairing.

[00:02:13]Philip the First, the dynasty's foundational figure, appeared 14 times within just a few generations of Charles's lineage. The physical results were staggering. The Habsburg jaw, a mandibular prognathism that caused the lower jaw to protrude dramatically beyond the upper, was so extreme in Charles that he could not bring his teeth together to chew food. His tongue was reportedly so enlarged that he drooled continuously and spoke with significant difficulty, and contemporaries described conversations with him as exercises in patience and interpretation. He could not walk until age eight. He could not speak until age four. He vomited frequently, suffered episodes of sudden unconsciousness, and his limbs were weak to the point where courtiers routinely assisted him with tasks that healthy adults perform without thought. He had two wives, Marie Louise of Orléans and then Mariana of Neuburg, and produced zero surviving children, a biological outcome that was never in serious doubt given the severity of his condition. He died in November 1700 at age 38, his body essentially exhausted before it had ever been fully functional, and the extinction of the Spanish Habsburg line triggered the War of Spanish Succession, redrawing the political map of Europe.

[00:03:28]One man's genetic collapse producing one of the continent's defining 18th century conflicts. Richard III of England.

[00:03:36]In September 2012, workers excavating a Leicester car park discovered a skeleton that would become the most scientifically examined set of royal remains in British history. The bones were confirmed via mitochondrial DNA matched to living descendants to be those of Richard III, last Plantagenet King of England, who had died at the Battle of Bosworth Field in August 1485 and had been buried, then forgotten beneath what eventually became a municipal parking lot. What the skeleton revealed was striking, not because it matched the monstrous portrait Shakespeare had constructed in his famous play, but because it partially did and partially didn't. The spine showed severe adolescent-onset idiopathic scoliosis, a dramatic shaped lateral curvature estimated at somewhere between 65 and 85°, which would have made Richard's right shoulder visibly higher than his left and given him a noticeably asymmetrical silhouette. This was not a birth defect in the strictest congenital sense, but a condition that developed during his teenage years and progressed to the point of medical significance. What Shakespeare described as a withered arm, however, found no support in the bones, no evidence of a shortened or malformed upper limb existed, suggesting that the Tudor propagandists who shaped Shakespeare's source material had invented or exaggerated that detail to tie physical deformity to moral corruption in the audience's mind. The skeleton also contained evidence of roundworm infection, a reminder that parasites were no respecter of royal blood. The skull bore multiple perimortem injuries consistent with battle wounds, including a severe strike to the base of the cranium, suggesting that whatever Richard's physical limitations, he died fighting rather than fleeing. The gap between the monster of the portraits and the complicated imperfect man in the ground is one of the more unexpectedly human gaps in English royal history.

[00:05:27]James VI of Scotland and the First of England. No autopsy survives and no skeleton has been analyzed, so everything known about James Stuart's physical condition comes from the people who watched him move through rooms, drink from cups, and hold court for decades, and they wrote about it with the frankness that diplomatic dispatches allow when they're not intended for the subjects' eyes. Ambassadors from France, Venice, and the Spanish Netherlands consistently described a king whose legs were weak and unreliable, who leaned on attendants during public appearances, and who moved with a gait that observers found at odds with the authority his position demanded. His tongue was described as too large for his mouth, causing him to speak thickly and to lose liquid from his lips when drinking, characteristics consistent with macroglossia, though no formal diagnosis is possible at this distance. He was famously unable to sit still, fidgeting and shifting throughout audiences in a way that struck contemporaries as undignified, and that some modern medical historians have connected to possible neurological or musculoskeletal conditions, with hypotheses ranging from rickets affecting his lower limbs to Perthes disease causing avascular necrosis of the femoral head, though all such retroactive diagnoses remain speculative. What makes James particularly interesting is the contrast between his physical presentation and his intellectual output. He authored works on theology, demonology, kingship, and tobacco, and was by most scholarly accounts a genuinely formidable thinker operating inside a body that consistently undermined the performance of majesty. Whether his conditions were congenital, the result of early childhood illness, or some combination of both, his court adapted around them, and the record of that adaptation is one of the more quietly revealing windows into how royal physical disability was managed and minimized in the early modern period. Carlos II of Austria. He is not Charles II of Spain, but he is his ancestor, and his case matters precisely because of that relationship, because watching Carlos II of Austria reveals the mechanism in motion before the catastrophe arrives. Born in 1540 and married in 1571 to Maria Anna of Bavaria, who was herself a Habsburg on her mother's side, Carlos added another tight loop to a genealogical structure that was already dangerously self-referential. The Habsburg jaw was present and pronounced, eating and speaking were documented difficulties, and contemporary accounts describe chronic illness throughout his life, likely reflecting the immune system compromises that accompany severe inbreeding, even when they don't produce the full terminal cascade seen in his Spanish descendants. What makes his case valuable beyond his individual suffering is the documentary record it creates.

[00:08:11]Court portraits of the Habsburg line across multiple generations show the jaw deformity appearing, then deepening, then becoming more extreme, like a physical argument written in oil paint across the walls of European palaces.

[00:08:24]Carlos's children showed greater severity than he did. Their children showed greater severity still. The decision to continue marrying within the family, generation after generation, despite watching the jawline push further forward and the health deteriorate further with each iteration, is one of the more remarkable examples of institutional denial in European history. A dynasty watching itself physically collapse in the mirrors of its own portraiture and choosing not to change course. Ferdinand II, the Holy Roman Emperor, was Carlos's son. Charles II of Spain, the terminal case, was his great-grandson.

[00:08:58]The line between them is a straight one, measurable in portraits and in bone.

[00:09:02]King Edward VI of England. He was born on the 12th of October, 1537, and his mother, Jane Seymour, was dead 12 days later, likely from puerperal fever, making Edward's entry into the world both the dynastic triumph Henry VIII had spent a decade and two discarded queens pursuing and an immediate personal catastrophe. He was premature, fragile from the start, and the detailed health records maintained by Tudor court physicians document a childhood of recurring fevers, respiratory infections, and a constitutional weakness that responded poorly to everything the era's medicine could offer. For the first years of his reign, he became king at nine. He was functional enough, presiding over a Protestant reformation of the English church with advisers doing the heavy governing. Then, in 1552, measles struck. Edward survived it, but whatever reserve of physical resilience he had possessed was apparently consumed in the process, Because what followed was a deterioration of extraordinary speed and horror. His physicians documented the loss of his hair, his fingernails, and his toenails. His skin darkened. His legs swelled to the point where he could not lie flat without his breathing becoming labored to the point of suffocation. He lost the ability to speak clearly in his final weeks. Modern medical historians believe the primary cause was pulmonary tuberculosis, possibly complicated by a suppurative pulmonary disorder developing alongside it. Though some researchers have raised the possibility that arsenic present in the medicines of the era accelerated or complicated his decline. In desperation, his physicians eventually handed his care to an unlicensed healer, a wise woman whose remedies accomplished nothing. He died on the 6th of July, 1553, aged 15, having reigned for 6 years without ever being well enough to govern on his own terms. His face in his final portraits already carrying the hollowed, pale quality of a body that had been losing its argument with itself for years. Don Carlos of Spain, born in 1545 to parents who were double first cousins. His father, Philip II of Spain, and his mother, Maria Manuela of Portugal, shared both sets of grandparents. Don Carlos arrived into a genetic situation that was already severely compressed, and the physical signs were visible early. A reportedly misshapen skull, uneven shoulders, and a thin, sickly constitution that contrasted sharply with the expectations placed on the heir to the most powerful monarchy in Europe. He ate compulsively and in patterns contemporaries found disturbing. He ran fevers with abnormal regularity and had extreme sensitivity to temperature. Then, in 1562, at age 17, he fell down a staircase at Alcalá de Henares while reportedly chasing a servant girl, fractured his skull, and fell into a coma. The most famous anatomist of the 16th century, Andreas Vesalius, whose work had revolutionized European understanding of the human body, was summoned to perform a trepanation, drilling into the prince's skull to relieve pressure, and Carlos survived. But the person who emerged from that recovery was measurably worse than the person who had fallen down the stairs. The rages that followed were documented in court records as ungovernable. He threatened courtiers, attempted to throw a page from a window, physically assaulted the Duke of Alba, and on at least one occasion reportedly demanded that his bootmaker eat the boots he had made incorrectly. Philip II, facing a son who was both the heir to his throne and a person who could not be safely allowed near power, made a decision that had no good options. He had Carlos arrested and imprisoned in January 1568.

[00:12:40]Six months later, on the 24th of July 1568, Carlos was dead in his cell at age 23.

[00:12:47]The cause still debated. A prolonged voluntary fast, the effects of imprisonment on an already fragile body, or something else entirely. His story became the basis for Schiller's 1787 play and Verdi's 1867 opera, both of which transformed him into a romantic, tragic hero, which he may or may not have been, but which he certainly was not in the manner either work depicts. King George III of Great Britain.

[00:13:18]He reigned for 59 years, longer than any British king before him, and spent the final decade of that reign completely blind, completely deaf, and completely disconnected from reality, locked in a room at Windsor Castle, bearded, wearing a dressing gown, playing the harpsichord for hours in total darkness, holding conversations with people who were not present. The first episode of acute mental disturbance came in 1788, and the descriptions left by his physicians are clinically extraordinary.

[00:13:47]George talked continuously, without pause, at such speed and for such duration that he eventually lost his voice and foamed at the mouth. His speech documented as incoherent but unrelenting. He was physically agitated, appeared to hallucinate, and his urine, documented by royal physicians with the kind of specificity that medical records of the era sometimes achieve, turned a dark blue purple during episodes. That detail, the purple urine, became central to the most important reinterpretation of his condition in modern times. A 1969 paper by Ida Macalpine and Richard Hunter, published in the British Medical Journal, proposed that George's symptoms were consistent with acute intermittent porphyria, a metabolic disorder affecting heme synthesis that can produce neurological and psychiatric episodes. A 2010 analysis of preserved hair samples found elevated arsenic levels, leading some researchers to argue that arsenic-containing medicines routinely given to George may have triggered or worsened porphyria attacks, a hypothesis that remains contested with some medical historians arguing the arsenic alone could explain the symptoms and others maintaining a different psychiatric diagnosis entirely. What is not contested is the trajectory. By 1810, he broke permanently and the regency began. He outlived his own sanity by a decade, dying in January 1820, having been kept alive by physicians who had no reliable understanding of what had destroyed him and no tools to reverse it. Emperor Ferdinand I of Austria. He had up to five seizures per day. That figure, documented by court physicians and corroborated by diplomatic observers who had no incentive to exaggerate, provides the simplest possible summary of why Ferdinand I of Austria's reign from 1835 to 1848 was, in practice, the reign of the men around him. Ferdinand suffered from epilepsy of significant severity, and he also had hydrocephalus, an abnormal accumulation of cerebrospinal fluid in the brain, which gave his head a visibly enlarged appearance that formal portraiture worked hard to minimize and that written accounts were considerably less discreet about. His speech was severely impaired.

[00:16:05]Contemporaries described him as unable to sustain a coherent conversation, and the famous remark attributed to him, "I am the emperor and I want dumplings," may be apocryphal, but it became an enduring symbol of the distance between his title and his functional capacity precisely because it captured something true about that distance, whether he said it or not. The decision to place Ferdinand on the throne, despite full knowledge of his condition, was not an accident or an oversight. It was a calculation. An emperor who could not govern could not interfere, and so real power sat with Metternich and the state conference, while Ferdinand provided the dynastic legitimacy that the system required. He abdicated in December 1848 during the revolutionary upheaval that swept across Europe, retired to Prague, and lived quietly for another 27 years, dying in June 1875 at age 82, which means he outlived most of the men who had governed in his name and survived into an era when the empire itself was transforming into something his incapacity had helped, inadvertently, to shape. Alexei Romanov. Photographs of Alexei show a beautiful child, wide eyes, dark hair, the kind of face that looks composed and thoughtful in formal portraits. What the photographs do not show is that any bruise on that face, any knock against a table corner, any tumble in a corridor could trigger an episode of internal bleeding that might last for days, during which he screamed continuously and could not be effectively helped by anyone. Alexei suffered from hemophilia B, also called Christmas disease, a deficiency of clotting factor nine inherited through his mother, Alexandra, from her grandmother, Queen Victoria, who carried the gene and transmitted it to several of her descendants across the royal houses of Europe. A single genetic mutation distributed across thrones from Russia to Spain to Prussia like a slow-moving inheritance of catastrophe.

[00:18:01]During severe episodes, blood pooled into Alexei's joints, inflaming them, destroying cartilage, and leaving him temporarily crippled in addition to the pain. He was photographed being carried in the arms of a Cossack sailor named Derevenko, his legs dangling, because he could not walk after a serious internal bleed. The heir to 300 years of Romanov rule, unable to stand on his own.

[00:18:24]Alexandra's search for relief for her son led her to Grigori Rasputin, a Siberian mystic whose apparent ability to calm Alexei's episodes, possibly through hypnotic suggestion, reducing stress-induced vascular pressure, though the mechanism remains debated, gave him an influence over the empress that extended into her communications with the Tsar about ministerial appointments and wartime policy. The secrecy surrounding Alexei's condition, maintained for years from the Russian public, contributed to the growing perception of an imperial family operating in a sealed world disconnected from reality. Alexei was 13 when the revolution came. He was shot alongside his family in a basement in Yekaterinburg on the 17th of July, 1918.

[00:19:07]A boy whose body had been trying to kill him since birth, finally killed by something else entirely. Kaiser Wilhelm II of Germany. The delivery lasted so long and went so badly that the physicians attending the birth of the future German emperor in January 1859 used forceps in a way that damaged the brachial plexus, the network of nerves running from the main spine through the shoulder and down the arm on the left side of the infant's body. The result was Erb's palsy, a left arm that was approximately 6 inches shorter than the right, significantly thinner in muscle mass, and capable of only very limited movement at the elbow.

[00:19:43]Wilhelm spent his entire adult life managing the concealment of this disability with a precision that bordered on obsessive. In formal portraits, he is almost invariably shown with the left hand tucked into a pocket, resting on a sword hilt, draped across his body, or otherwise positioned so that the asymmetry is minimized or invisible. The court cooperated in this concealment as a matter of policy. What makes the childhood particularly grim is the treatment applied in the attempt to remedy the arm. Electric shocks delivered to the damaged limb, a device used to straighten the neck, given that Wilhelm also had torticollis, a muscular imbalance causing the head to tilt, and periodic binding of his healthy right arm to force use of the damaged left one. A practice that produced no functional improvement and must have been significantly distressing for a young child who was simultaneously being prepared for imperial rule. The historian John Röhl, whose three-volume biography of Wilhelm is the definitive scholarly treatment, has argued at length that the combination of the disability itself, the humiliation of the remediation attempts, and the relentless pressure applied by his mother, Victoria, the eldest daughter of Queen Victoria, who found her son's imperfect body a source of profound personal disappointment, produced a man of acute and poorly managed insecurity.

[00:21:04]One who compensated with aggression, posturing, and an appetite for dominance that shaped German foreign policy in the years leading to 1914.

[00:21:15]Whether the arm caused the war is an argument historians will never fully resolve. That it shaped the man who helped cause the war is considerably harder to dismiss. King João VI of Portugal. He moved the entire Portuguese court to Brazil in November 1807, roughly 15,000 people. The government, the royal treasury, the printing presses, the library, loading them onto ships, and sailing ahead of Napoleon's advancing army, making Rio de Janeiro the center of a European empire in one of the more extraordinary geopolitical pivots of the 19th century. The man who made this decision was, by all contemporary diplomatic accounts, physically spectacular in his deterioration. João suffered from a chronic skin condition described in some sources as erysipelas, a bacterial infection producing inflamed, swollen, cracked skin that affected his legs and feet particularly severely, making walking painful and eventually difficult, and making personal hygiene a sustained physical challenge rather than a casual matter of routine. His weight was significant and his eating was compulsive. The most frequently repeated anecdote about him, cited widely, though its primary sourcing requires scrutiny, is that he kept roasted chicken in his coat pockets and ate while walking between rooms of the palace, grease marking the velvet of his royal garments. Diplomatic dispatches from foreign ministers describe audiences with him as olfactorily challenging experiences. Accounts rendered with the careful language of people who needed to remain on good terms with the Portuguese crown while also accurately reporting to their home governments what the crown actually looked like up close. None of this diminished his political instincts in the way that Ferdinand I of Austria's conditions diminished his. João governed, made consequential decisions, navigated Napoleon, a Brazilian independence movement, and a Portuguese constitutional revolution, and died in March 1826, still in possession of at least some of his political faculties.

[00:23:09]The gap between the grandeur of what he accomplished and the physical reality of the man who accomplished it is one of the more unexpectedly compelling contradictions in the history of European monarchy. A king whose body was visibly failing for most of his adult life conducting an empire from inside it anyway. If you want to see more, click the video on screen now.