When a diagnosis enforced a social order
In 1851, American physician Samuel A. Cartwright proposed drapetomania as a supposed mental illness that made enslaved people try to escape. The name joined Greek-derived words for “runaway” and “madness,” turning a direct response to enslavement into a defect located in the person resisting it.
That framing had practical force. If flight could be described as sickness rather than a rational pursuit of freedom, the violence and coercion of slavery could fade from the explanation. Cartwright’s proposal belonged to a pro-slavery medical argument, not to a disease established through reliable evidence about the body or mind.
How a label can outlive its credibility
A medical term can travel farther than the reasoning behind it. Once printed in a dictionary or reference book, a label may be copied, indexed, or preserved as part of the record of what people once called an illness. Its presence documents circulation; it does not certify that the condition exists.
“Bicycle face,” another obsolete diagnosis, shows how medical language can attach disease to a new behavior. As cycling became popular, some commentators treated the strained or anxious expression of a rider as a medical problem. The label made a fleeting appearance or fear seem like evidence of bodily harm, even though a printed name alone could not establish that cycling caused a disease.
What a diagnosis needs to mean
A sound diagnosis must do more than name behavior that worries the people in power. It needs a coherent account of what is wrong, evidence that the proposed condition is distinct, and a basis for connecting it to its cause. Drapetomania failed that test: the supposed symptom was the attempt to escape captivity, while the social conditions producing that response were treated as normal.
Old medical dictionaries are therefore useful in two ways: they preserve past ideas, and they show how easily authority can be made to look like proof. A label can be real on the page without describing a real disease.
