Louis-Florentin Calmeil

Louis-Florentin Calmeil (August 9, 1798 – March 11, 1895) was a French psychiatrist and medical historian born in Yversay.

Among his assistants at Charenton was forensic psychiatrist Henri Legrand du Saulle (1830–1886).

It was one of the first publications dedicated to the history of psychiatry, and was a rational discourse that dealt with topics such as demonology, lycanthropy, religious obsession and other abnormal thought processes.

Another important work by Calmeil was an 1826 treatise that discussed general paresis, considered to be the first separately identifiable neuropsychiatric disease entity.

General paresis was originally described a few years earlier by Antoine Laurent Bayle (1799–1858).