Casal, was born in Girona Catalonia, Spain, practised in Oviedo from 1720 to 1751, at which time he moved to Madrid as King Ferdinand's physician. He described pellagra in a book published in 1762, calling it mal de la rose due to the red rash seen on the hands and feet of sufferers.
- Biography (in Catalan). Galeria de Metges Catalans. Retrieved July 23, 2016.
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