Libellus de Epidemia, quam uulgo morbum Gallicum uocant,

One of the earliest treatises on syphilis, and one of the few medical books printed by Aldus Manutius in the 15th century. Leoniceno included a good description of syphilitic hemiplegia. He believed that syphilis was known to classical writers. English translation in Major, Classic Descriptions of Disease, 3rd ed., 1945, p. 15.  ISTC No. il00165000. Digital facsimile from the Bayerisches StaatsBibliothek at this link.