The publication of Recherches sur le ramollissement du cerveau in 1819 established the first accurate clinical description of spontaneous cerebral softening. By identifying this condition as a distinct anatomo-clinic entity separate from apoplexy and encephalitis, the French physician shifted the trajectory of neurological pathology during the early nineteenth century.
Medical Education and Affiliations
Léon Rostan received his foundational education at the Lycée Henri-IV before advancing to the Paris Medical Faculty. He completed additional medical studies in Marseille. Throughout his career, he operated as a disciple of Philippe Pinel and maintained a long-standing professional association with the Salpêtrière Hospital in Paris. His standing within the medical community was marked by his induction into the Académie Nationale de Médecine and his election as a foreign member of the Royal Swedish Academy of Sciences in 1845.
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Rostan challenged prevailing medical theories, particularly those championed by followers of Broussais who insisted that brain softening resulted from inflammation. In contrast, his research defined cerebral softening as an independent clinical phenomenon. Beyond his work on the brain, he conducted early investigations into the classification of human body types. He developed a system utilizing descriptive terminology, categorizing physiques as respiratory-cerebral, muscular, or digestive.
Clinical Research and Theoretical Writings
His academic output included treatises on various medical subjects, ranging from his graduate thesis on charlatanism to extensive inquiries into animal magnetism and somnambulism. His major published works, such as the two-volume Cours élémentaire d'hygiène and the Traité élémentaire de diagnostic, de pronostic, d'indication thérapeutique, reflect his systematic approach to clinical observation. The medical term now known as paroxysmal nocturnal dyspnea, characterized by cardiac asthma linked to left ventricular failure, was historically identified as Rostan's asthma.
Fast facts
- Born: 1790, Saint-Maximin-la-Sainte-Baume
- Died: 1866, Paris
- Burial site: Cimetière de Montmartre, Division 26
- Key publication: Recherches sur le ramollissement du cerveau (1819)
- Professional membership: Académie Nationale de Médecine
- Eponym: Rostan's asthma
Questions readers ask
What medical condition is associated with his name?
Rostan's asthma, which is currently referred to as paroxysmal nocturnal dyspnea, a symptom of heart disease.
Where is Léon Rostan buried?
He is buried in Division 26 of the Cimetière de Montmartre in Paris.



