Pierre François Olive Rayer

Pierre Rayer (March 8, 1793 - September 10, 1867) was a French dermatologist whose career spanned several fields. He is particularly known for his work in pathological anatomy and physiology.

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In 1837, he found that the fatal equine disease known as glanders can also be contagious to humans. In 1841 he published a three-volume book on diseases of the kidney. In 1850 Rayer published a work which first described anthrax; in which he documents the studies he did with physician Casimir Davaine (1812-1882) concerning Bacillus anthracis.

Eponyms associated with Pierre Rayer:

Rayer's disease: a disorder characterized by chronic jaundice, splenomegaly, and hepatomegaly.
Rayer's nodules an xanthoma; yellowish nodules on the skin (often on the eyelids).