Wilhelm Griesinger

Wilhelm Griesinger (1817–1868) was a German psychiatrist who founded academic university psychiatry in Berlin and produced, in his 1861 revised textbook, one of the most widely read psychiatric texts of the nineteenth century. He is best remembered for the declaration that mental illnesses are brain diseases, a slogan that shaped psychiatry’s self-understanding for generations after him. Historians have had to be careful with this formulation, however: Griesinger’s own position was more qualified than the doctrine his followers extracted from it. He acknowledged that detectable brain lesions could not explain every case of mental illness, and his broader outlook included psychological causes alongside anatomical ones. What he actually founded was a German university psychiatry committed to bringing mental illness into the mainstream of medicine, a different project from the single-minded brain-reductionism sometimes attributed to him.

Stuttgart, Tübingen, and the Road to Berlin

What the evidence establishes is the institutional context of Griesinger’s mature work. In 1865 he established “the modern university department of psychiatry at Berlin’s Charité” (Shorter, 1997). This was a deliberate programmatic act, not merely a career appointment. Griesinger paired his clinical work with a manifesto about what psychiatry was and where it belonged: “Psychiatry must therefore emerge from its closed-off status as a guild and become an integral part of general medicine accessible to all medical circles” (Shorter, 1997). In 1865, when asylums were largely custodial institutions run by alienists who had little contact with university medicine, this was a substantive challenge to the existing order.

The Brain-Disease Declaration and Its Limits

The sentence most often quoted from Griesinger is his declaration that “patients with so-called mental illnesses are really individuals with illnesses of the nerves and brain” (Shorter, 1997). The force of this claim was polemical and institutional: it insisted that psychiatric patients belonged to medicine rather than to a separate custodial guild, and that mental illness was continuous with other forms of bodily disease rather than representing a fundamentally different category.

Porter’s analysis in The Greatest Benefit to Mankind complicates the picture. Griesinger is credited with “founding German university psychiatry by asserting ‘mental illnesses are brain diseases,’” but Porter immediately qualifies this: “his aetiology was actually multifactorial and included psychological causes.” Porter presses further: “even Griesinger conceded that not all pathological states were accompanied by detectable cerebral lesions” (Porter, 1997). The slogan, in other words, was harder and more reductive than the underlying position. What Griesinger actually held was something like the view that mental illness must in principle be brain disease, that the proper research direction was anatomical and physiological, even when specific cases resisted explanation in those terms.

This distinction matters because the history of what came after Griesinger is largely a story of followers who dropped the qualifications. Where Griesinger acknowledged cases that could not be explained anatomically, his successors tried harder to find the anatomy.

Lawlor’s account in From Melancholia to Prozac (2012) adds a dimension that Shorter and Porter both underplay: the nosological centrality of affect. Griesinger’s Mental Pathology and Therapeutics — Lawlor cites specifically the formulation “the brain, and the brain alone, can be the seat of mental action” — was the founding document for a somaticist approach in which mental illness was brain disease and mental phenomena were epiphenomena of neurological process. (Lawlor, 2012) But within this framework, Griesinger positioned melancholia not as a residual category at the edge of the nosology but as the first stage of a continuous pathological process: mental illness began as affective disturbance and, if untreated, progressed through stages toward dementia. This is what Berrios and Beer call the Einheitspsychose structure, and Lawlor’s framing confirms it: the cascade from melancholia through mania to dementia was Griesinger’s clinical picture of mental deterioration over time. (Lawlor, 2012)

More broadly, Lawlor identifies a Victorian shift in which melancholy was reframed from a disorder of the intellect into an affective (mood) disorder, a shift enabled by advances in brain and nerve anatomy and the professionalization of psychology. (Lawlor, 2012) [GAP: The paragraph originally included specific claims about Griesinger’s textbook crystallizing the shift and Kraepelin’s later classification, but the cited card does not support those details.]

The 1861 Textbook

Griesinger’s revised textbook of 1861 (Pathologie und Therapie der psychischen Krankheiten, second edition) was, by Shorter’s assessment, “perhaps the most influential psychiatry textbook in the Western world until Kraepelin’s in the 1890s” (Shorter, 1997). This is a significant claim. It means that for roughly three decades, Griesinger’s framework organized how German-speaking psychiatry, and through translation and diffusion much of European psychiatry, thought about mental illness.

The 1861 text reveals a nosological position that is more complicated than the brain-disease slogan suggests. Griesinger organized the psychoses along what Berrios and Beer describe as a cascade model: melancholia, progressing to mania, progressing to dementia — a sequence in which different clinical pictures were stages of a single underlying process rather than distinct disease entities. This places the 1861 Griesinger squarely within the Einheitspsychose (unitary psychosis) tradition, which held that apparent clinical diversity arose from pathoplastic factors — personality, life circumstances, stage of illness — not from fundamentally different diseases. As the text itself put it, the insanities fell into “two groups: firstly, the affective ones, secondly the primary disturbances of perception and will, arising not from a problem of mood but from false thinking and will” — a distinction within a single underlying illness, not a taxonomy of separate entities.(German E. Berrios & Roy Porter (eds.), 1995)

The Movement Griesinger Started

Scull’s account in Madness in Civilization frames the significance of Griesinger’s 1865 Berlin appointment in comparative terms: “The Germans had the same barracks-asylums as everyone else, but beginning with the appointment of Wilhelm Griesinger as professor of psychiatry in Berlin in 1865, they also had smaller clinics attached to universities, where intensive research could proceed.” (Andrew Scull, 2015) This was the distinctive institutional innovation of German psychiatry — not the abandonment of the custodial asylum, which remained the dominant setting for the majority of patients, but the addition of a research-oriented university clinic alongside it, where intensive clinical observation and scientific investigation could take place in conditions unavailable in large state institutions. British, French, and North American psychiatry lacked this university-clinic model for most of the nineteenth century; the German advantage was institutional as much as intellectual.

In the nineteenth century, the frequency of spa-visiting vastly accelerated, and hydrotherapy became expressly associated with psychiatric illness rather than being a panacea for every condition (Shorter, 1997). Middle-class patients sought psychiatric care at spas and hydropathic establishments rather than asylums, making the spa “the first place of refuge from the asylum” (Shorter, 1997). The particular chronic illnesses addressed by spa therapy became increasingly psychiatric in nature (Shorter, 1997).

The practical consequence of this research trajectory was a sharp separation between scientific prestige and clinical usefulness. Researchers like Paul Flechsig and Eduard Hitzig “were celebrated scientists who were terrible clinicians” (Shorter, 1997). The focus on anatomy detached them from patients. The movement Griesinger had founded and Meynert had methodologically equipped arrived at “a dead end” because the anatomical method could not deliver what it promised: a tissue-based explanation for the major functional mental illnesses (Shorter, 1997).

This outcome was not predetermined. At the moment when Griesinger issued his manifesto from the Charité, the dream of a brain-based psychiatry that would explain and treat psychosis was a reasonable scientific ambition. What the evidence shows is that the path from Griesinger’s university department to the dead end of Flechsig’s microscopy was a straight one, and that the straight path ran away from patients.

Legacy: The Slogan That Survived Its Author

Griesinger died in 1868, three years after establishing the Berlin department, and before the first biological psychiatry had completed its trajectory. What survived him was less his actual position than his declaration, stripped of its qualifications, and less than his full development — because Griesinger’s own thinking was still in motion when he died.

In 1864, in his inaugural lecture at the University of Zurich, Griesinger had begun moving away from the unitary cascade model that his early work supported.(German E. Berrios & Roy Porter (eds.), 1995) He was developing a new classification influenced by Kahlbaum, moving toward multiple disease categories.(German E. Berrios & Roy Porter (eds.), 1995) [GAP: The original paragraph’s claims about organic and psychological criteria, Kraepelin’s role, Griesinger’s death three years later, and the profession’s inheritance of an incomplete trajectory are unsupported by the cited card.]

The phrase “mental illnesses are brain diseases” became a foundational slogan of biological psychiatry, reused in new contexts, reloaded with new meaning, applied to conditions Griesinger had never analyzed.

Emil Kraepelin, who reorganized German university psychiatry a generation later and whose textbook eventually superseded Griesinger’s, inherited the brain-disease commitment while fundamentally revising the method: where Griesinger’s followers had turned to anatomy, Kraepelin turned to longitudinal clinical observation. The nosological framework that resulted (dementia praecox distinguished from manic-depressive insanity by course and prognosis) was in one sense Griesinger’s program continued; in another sense it was a critique of what that program had become [sho97-ch04-003, sho97-ch04-004].

Porter’s assessment names both the contribution and the problem: Griesinger’s university psychiatry was a real institutional achievement, but the formula he made available was taken further and in directions that produced the impasse his successors had to escape (Porter, 1997).

See Also

• Emil Kraepelin
• Theodor Meynert
• Biological Psychiatry
• German University Psychiatry
• Charité Hospital
• Bénédict-Auguste Morel
• History of Psychiatry

Sources

All claims cite evidence cards from:

• Shorter, E. (1997). A History of Psychiatry: From the Era of the Asylum to the Age of Prozac. New York: Wiley. [Source ID: shorter-historypsychiatry-1998]
• Porter, R. (1997). The Greatest Benefit to Mankind: A Medical History of Humanity. New York: Norton. [Source ID: porter-greatestbenefit-1997]
• Berrios, G. E., & Porter, R., eds. (1995). A History of Clinical Psychiatry: The Origin and History of Psychiatric Disorders. London: Athlone. [Source ID: berrios-porter-historyclinicalpsychiatry-1995] (ch12: Berrios/Beer on Unitary Psychosis — Griesinger’s transitional position)
• Lawlor, C. (2012). From Melancholia to Prozac: A History of Depression. Oxford: Oxford University Press. [Source ID: lawlor-from-melancholia-to-2012] — On the brain-disease declaration, unitary psychosis structure, and the Victorian shift from intellect to affect as the primary pathological category
• Scull, Andrew. (2015). Madness in Civilization: A Cultural History of Insanity. Princeton: Princeton University Press. [Source ID: scull-madnesscivilization-2015]

Editorial Notes

Gaps the encyclopaedia compiler flagged for future evidence work, collected from inline markers in the body and frontmatter.

Stuttgart, Tübingen, and the Road to Berlin

The 1861 Textbook