Greek and Roman physicians believed the womb could move around the female body causing illness. Hystera gave us hysteria, a diagnosis applied almost exclusively to women into the 19th century.
Plato, in the Timaeus, describes the womb as a living creature that longs to bear children; denied, it roams the body in anger, blocking the breath and causing every kind of distress. And the Greeks inherited the hunt: the Kahun papyrus, a thousand years before Hippocrates, already prescribes fumigations to drive the wandering womb back to its seat, sweet smoke below to lure it, foul smoke above to chase it. For two thousand years, medicine's answer to distressed women was to smoke out an animal that did not exist.
The claim that hysteria was never medicine at all: the wandering womb was a demon theory with Greek vocabulary, and the treatments, from fumigations to restraint, were exorcisms with better branding. On this reading, the word encodes the oldest technology for pathologizing women.
Which of today's medical terms will future centuries read as evidence of our blind spots?