Sicamus Aëtius sometimes called Aëtius Sicanius or Siculus, was a Byzantine medical writer and the author of a treatise On Melancholy , Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 De Melancholia, which is commonly printed among the works of Galen

Galen

Aelius Galenus or Claudius Galenus , better known as Galen of Pergamon , was a prominent Roman physician, surgeon and philosopher...

. His date is uncertain, but if he is not the same person as Aëtius of Amida

Aëtius Amidenus

Aëtius of Amida was a Byzantine physician and medical writer, particularly distinguished by the extent of his erudition. Historians are not agreed about his exact date...

, he must have lived after him, as his treatise corresponds exactly with part of the latter's great medical work. It is compiled from Galen

Galen

Aelius Galenus or Claudius Galenus , better known as Galen of Pergamon , was a prominent Roman physician, surgeon and philosopher...

, Rufus of Ephesus

Rufus of Ephesus

Rufus of Ephesus was an ancient Greek physician and author who wrote treatises on dietetics, pathology, anatomy, and patient care. He was to some extent a follower of Hippocrates, although he at times criticized or departed from that author's teachings...

, Posidonius

Posidonius

Posidonius "of Apameia" or "of Rhodes" , was a Greek Stoic philosopher, politician, astronomer, geographer, historian and teacher native to Apamea, Syria. He was acclaimed as the greatest polymath of his age...

, and Marcellus Empiricus

Marcellus Empiricus

Marcellus Empiricus, also known as Marcellus Burdigalensis , was a Latin medical writer from Gaul at the turn of the 4th and 5th centuries. His only extant work is the De medicamentis, a compendium of pharmacological preparations drawing on the work of multiple medical and scientific writers as...

.