Syphilis is a complex, chronic infection caused by the bacterium Treponema pallidum. Before the development of modern therapeutics, this disease was widespread and often devastating, affecting people across all social strata, including many individuals who achieved global renown. The infection’s later stages can mimic other conditions, earning it the historical moniker “The Great Imitator.” Its prevalence and long-term effects on physical and mental health meant that it was a significant, yet often concealed, factor in the lives and careers of many historical figures.
Syphilis in the Pre-Antibiotic Era
Syphilis in the centuries before effective antibiotics progressed through distinct stages. The initial phase, known as primary syphilis, typically presented as a single, painless sore called a chancre, which often healed within a few weeks, making the infection easy to overlook. The secondary stage followed, characterized by a non-itchy rash that frequently involved the palms and soles of the feet, accompanied by flu-like symptoms. These symptoms were also temporary, leading the infection into a long latent period that could last for years or even decades.
Without treatment, approximately one-third of infected people would progress to the tertiary stage, where the most severe, life-altering complications occurred. This late stage was characterized by the formation of soft, tumor-like growths called gummas, serious cardiovascular damage, or neurosyphilis. Neurosyphilis, resulting from the bacteria invading the central nervous system, caused conditions such as general paresis of the insane (GPI) and tabes dorsalis, leading to dementia, paralysis, and blindness. Socially, the disease carried immense stigma, often referred to as the “Great Pox,” which resulted in concerted efforts by the afflicted and their families to conceal the illness, complicating historical diagnosis and treatment.
Documented Cases in Arts and Literature
The chronic, debilitating nature of late-stage syphilis profoundly affected many figures in the creative sphere, often leading to a tragic end. The French poet Charles Baudelaire, a significant figure in modern literature, was diagnosed with the infection. His symptoms eventually progressed to hemiplegia and aphasia, which severely limited his ability to write in the last years of his life before his death in 1867.
The French writer Guy de Maupassant died at age 43 from complications of neurosyphilis, having acquired the infection approximately 16 years earlier. The mental and physical decline associated with the disease manifested as insanity before his death, a consequence of central nervous system involvement. The painter Paul Gauguin, known for his move to Tahiti, was widely believed to have suffered from the infection, which may have contributed to his chronic poor health.
The Danish author Karen Blixen (writing as Isak Dinesen) was diagnosed with the infection in 1915. She continued to experience severe abdominal pain and other symptoms, with physicians ultimately diagnosing her with third-stage chronic syphilis, or tabes dorsalis, a form of neurosyphilis. The composer Gaetano Donizetti also died from neurosyphilis in 1848.
Figures in Politics and Intellectual Thought
The impact of late-stage syphilis was destructive among those in positions of power and intellectual leadership, especially when the infection progressed to general paresis, a form of dementia. The German philosopher Friedrich Nietzsche is a prominent example; his complete mental collapse in 1889 is widely attributed to neurosyphilis. His condition manifested as general paresis of the insane, leading to years of severe mental illness until his death in 1900.
In the United States, Abraham Lincoln’s law partner claimed the future president was infected with the disease in the mid-1830s. Although this remains a retrospective diagnosis, it highlights the infection’s presence across society, even among those destined for the highest offices. The American gangster Al Capone eventually succumbed to the effects of the infection. He was diagnosed with neurosyphilis, and his mental capacity declined significantly while incarcerated, demonstrating the severe neurological damage of untreated syphilis.
The American business magnate Howard Hughes was diagnosed with neurosyphilis in 1932. His increasing reclusiveness and erratic behavior in his later years have been linked to the chronic effects of the disease on his nervous system. The Prussian cavalry lieutenant general Friedrich Wilhelm von Seydlitz died from the infection in 1773, illustrating the disease’s presence within the military and noble classes.
Modern Understanding and Treatment
The trajectory of syphilis dramatically shifted with the introduction of antibiotics, providing a stark contrast to the historical tragedy of the disease. Penicillin G, often referred to as the “Silver Bullet,” became the standard and highly effective treatment for all stages of the infection after the 1940s. For early-stage syphilis, a single intramuscular injection of penicillin is often sufficient to cure the infection. Neurosyphilis, however, requires a more intensive course of intravenous penicillin G for 10 to 14 days.
Modern diagnosis relies on accurate serological (blood) tests, which detect antibodies to the bacterium, a significant improvement over relying on varied and confusing symptoms. These tests allow for the identification of the infection even during the asymptomatic latent stage. Although the disease is now curable, it remains a public health concern, with rates increasing in many countries. Despite the availability of effective treatment, the long-term neurological damage caused by late-stage neurosyphilis in historical figures remains a permanent reminder of the disease’s former devastating power.

