Porter was hospitalized with tuberculosis in a San Antonio sanatorium, a near-fatal illness that later inspired her story "Pale Horse, Pale Rider."
In September 1912, Katherine Anne Porter was hospitalized with tuberculosis at a sanatorium in San Antonio, Texas. Tuberculosis was, at the time, a widespread and often fatal disease, and Porter's bout with the illness was severe enough that she nearly died.
This period of illness and confinement had a profound and lasting impact on Porter's imagination and worldview. The experience of facing mortality at a young age, combined with the isolation of sanatorium life, would later resurface powerfully in her fiction — most notably in her acclaimed novella Pale Horse, Pale Rider (1939), which fictionalizes a near-death experience with influenza during World War I but draws on the same deep well of illness, delirium, and confrontation with death that she first experienced during this 1912 hospitalization.
Beyond its influence on specific works, the tuberculosis episode marked a turning point in Porter's early life, coinciding with the collapse of her first marriage and setting her on a path toward independence, self-reinvention, and eventually a career as a writer. Illness and recovery became recurring thematic preoccupations in her body of work, reflecting the fragility of the human body and spirit that she witnessed and experienced firsthand.