In the 1800s, the condition we now call depression was primarily known as “melancholia.” The term had roots stretching back to ancient Greece, but 19th-century physicians reshaped its meaning dramatically over the course of the century, transforming it from a disorder of faulty thinking into something much closer to our modern understanding of a mood disorder. Melancholia wasn’t the only label, though. Depending on a patient’s symptoms, sex, and social class, what we’d recognize today as depression might also be diagnosed as neurasthenia, hysteria, or simply “low spirits.”
Melancholia: The Primary Diagnosis
For most of the 1800s, melancholia was the standard medical term for persistent sadness, despair, and emotional suffering. But what physicians meant by the word shifted considerably between 1800 and 1900.
In the early decades (1780s through the 1830s), influential figures like Cullen, Pinel, and Esquirol defined melancholia as a disorder of intellect or judgment, a type of “partial insanity” that was often, but not always, associated with sadness. The emphasis was on disordered thinking: delusions, irrational fears, and distorted beliefs. A person could technically be diagnosed with melancholia even without deep sadness, as long as their reasoning was impaired in a specific way.
By the 1850s, a transition was underway. Physicians began drawing attention to a neglected category: melancholia without delusions. These patients weren’t experiencing bizarre beliefs or paranoia. They were simply profoundly sad, exhausted, and unable to function. Writers like Guislain, Bucknill, and Tuke argued that this form of melancholia reflected a primary disorder of mood, not of intellect.
The final shift came between the 1860s and 1880s. A group of prominent physicians, including Griesinger, Maudsley, Krafft-Ebing, and Kraepelin, confronted the question of why some melancholic patients did have delusions. Their conclusion: melancholia was fundamentally a mood disorder, and delusions, when present, emerged naturally from the abnormal mood rather than the other way around. This reframing laid the groundwork for how we think about depression today.
By 1892, the psychiatrist Daniel Hack Tuke defined melancholia in his Dictionary of Psychological Medicine as “a disorder characterized by a feeling of misery which is in excess of what is justified by the circumstances in which the individual is placed.” That definition would feel at home in a modern textbook. Tuke’s dictionary also used the phrase “mental depression” as a synonym for simple melancholia without delusions, one of the earliest appearances of the term that would eventually replace melancholia altogether.
Neurasthenia: Depression for the Modern Age
In 1869, the American physician George Miller Beard introduced a new diagnosis: neurasthenia, or “tired nerves.” The concept started narrow, describing nervous exhaustion, but quickly expanded to become a catch-all for what we’d now split into depression, anxiety, and chronic fatigue. By the late 1800s, neurasthenia had achieved worldwide medical acceptance.
Where melancholia was associated with severe, disabling sadness and was often diagnosed in asylum patients, neurasthenia occupied a different social space. As the Paris psychiatry professor Gilbert Ballet explained in 1911, melancholia was characterized by “motor and intellectual slowing” and “a painful feeling of powerlessness that explains the sadness.” Neurasthenia, by contrast, was a broader and less stigmatizing diagnosis that included pain, fatigue, and anxious preoccupation with one’s health. It was the diagnosis given to overwhelmed professionals, exhausted housewives, and anyone whose nerves seemed frayed by the pace of modern life.
In practice, this created a two-tier system. Severe depression was melancholia. Milder or more “respectable” depression, mixed with fatigue and physical complaints, was neurasthenia. The distinction had as much to do with class and social acceptability as it did with actual symptoms.
Hysteria: When Women Were Depressed
For women in the 1800s, depressive symptoms were frequently diagnosed as hysteria, a condition blamed on the uterus. The theory that a woman’s womb could wander through her body and cause emotional disturbance dated back to ancient Egypt, and it persisted with remarkable stubbornness into the Victorian era.
During the Victorian Age (1837 to 1901), most women carried smelling salts in their handbags, and fainting spells were attributed to the “wandering womb” reacting to emotional arousal. Physicians recognized that hysteria shared symptoms with what they diagnosed as melancholia or hypochondria in men, but the uterus remained the default explanation for women’s emotional suffering. The English physician Thomas Sydenham had argued centuries earlier that the uterus was not the primary cause and compared hysteria to hypochondria, but it took decades for the medical establishment to move past the “uterine fury” theory.
This meant that a man and a woman with identical symptoms of persistent sadness, fatigue, and hopelessness could easily receive completely different diagnoses. His would be melancholia or neurasthenia. Hers would be hysteria.
What Symptoms Physicians Recognized
Despite the shifting terminology, 19th-century doctors described symptoms that are remarkably familiar. The core features of melancholia, documented across centuries, were fear and sorrow. Robert Burton, whose earlier work influenced 1800s thinking, wrote that symptoms “may be infinite,” but the most frequent were “fear and sorrow,” which he called the “true characters and inseparable companions of most melancholy.”
Pinel, writing at the turn of the 19th century, described two opposite forms of melancholia: one marked by “the most fearful despondency, a profound dejection or even despair,” and another characterized by expansive, agitated energy. His student Esquirol coined the term “lypemania” for the depressive form, trying to distinguish pathological sadness from the broader and more confused category of melancholia. Other physicians documented suspicion, distrust, a sense of suffocation, and the conviction that one was being poisoned or persecuted.
Physical symptoms received attention too. Fatigue, slowed movement, slowed thinking, and an inability to feel pleasure or motivation were all recorded. The overlap between these physical complaints and the symptoms of neurasthenia is one reason the two diagnoses were so easily confused.
How Melancholia Was Treated
Treatment in the 1800s ranged from compassionate to brutal, sometimes within the same institution. The most progressive approach was “moral treatment,” a movement that gained traction in the first half of the century. Moral treatment emphasized kindness, spiritual development, and building the patient’s character. It called for humane interactions from everyone who came in contact with patients and represented a significant departure from the chains and isolation that had defined earlier asylum care.
On the pharmaceutical side, opium was the dominant drug treatment for melancholia throughout much of the century. Its use for mood disorders stretched back to classical medicine, but it became formalized in the early 1800s when the Engelken family in Germany developed a structured opium treatment protocol for depression. Opium therapy held “an outstanding position as a practical treatment for over 100 years,” even though the scientific basis for it was never established. Laudanum, a tincture of opium dissolved in alcohol, was widely available and commonly self-administered for low mood, sleep difficulties, and nervous complaints.
Other treatments included cold baths, bloodletting, forced exercise, and confinement. For patients diagnosed with hysteria, treatments could include pelvic massage, horseback riding, and various interventions aimed at “calming” the uterus. The quality of care depended enormously on the institution, the physician, and the patient’s social standing.
When “Depression” Replaced “Melancholia”
The word “depression” didn’t appear out of nowhere in the 20th century. It was already in use by the 1890s. Tuke’s 1892 dictionary used “mental depression” to describe patients who “look sad without having melancholic delusions,” essentially distinguishing straightforward sadness from the more dramatic presentations involving paranoia or hallucinations. But melancholia remained the dominant clinical term through the end of the 1800s.
The full transition happened gradually in the early 20th century, as psychiatry moved toward standardized diagnostic systems. “Depression” won out partly because it was broader and less burdened by centuries of conflicting definitions. Melancholia had meant a disorder of thinking, then a disorder of mood, then both. Depression offered a cleaner start. Today, melancholia survives as a clinical specifier, used to describe a particularly severe subtype of major depression characterized by an almost complete inability to feel pleasure.