Marcellus’ On Lycanthropy or Cynanthropy.
Those seized by the disease called cynanthropy or lycanthropy go out for the whole night in the month of February imitating wolves or dogs in all things, wandering until morning especially around graveyards. You can recognize those affected by it by the following signs: they are pale, their sight is weak, their eyes dry and they shed no tears. You should see their eyes are hollow, tongue dry and they produce no saliva at all. They are also thirsty and they have incurable wounds on their legs from continuous falls and the bites of dogs.
Things like this are the signs of their condition. One should know that lycanthropy is a form of melancholia, which you will treat at the time of the onset of symptoms by cutting a vein, evacuating the blood to the point of fainting, and having the patient follow a diet of rich food. Let them bathe in sweet water baths, then after you have administered whey from milk for three days, purge using Rufus’, Archigenes’ or Justin’s hiera* from the gourd, administering it at intervals two or three times. After purging, theriac from vipers is used. Also the other things mentioned in the case of melancholia are to be given as well. In the evening, when the disease has already come on, use ointments for the head and those perfumes that cause sleep. Rub the nostrils with opium. Give an occasional hypnotic to drink, as well.
*some kind of mixture of drugs
Περὶ λυκανθρωπίας ἤτοι κυνανθρωπίας Μαρκέλλου. οἱ τῇ λεγομένῃ κυνανθρωπίᾳ ἤτοι λυκανθρωπίᾳ νόσῳ κατεχόμενοι κατὰ τὸν Φευρουάριον μῆνα νυκτὸς ἐξίασι τὰ πάντα μιμούμενοι λύκους ἢ κύνας καὶ μέχρις ἡμέρας περὶ τὰ μνήματα μάλιστα διατρίβουσι. γνωρίσεις δὲ τοὺς οὕτω πάσχοντας διὰ τῶνδε· ὠχροὶ τυγχάνουσι καὶ ὁρῶσιν ἀδρανὲς καὶ ξηροὺς τοὺς ὀφθαλμοὺς ἔχουσι καὶ οὐδὲν δακρύουσι. θεάσῃ δὲ αὐτῶν καὶ κοίλους τοὺς ὀφθαλμοὺς καὶ γλῶσσαν ξηρὰν καὶ οὐδὲ ὅλως σίελον προχέουσιν. εἰσὶ δὲ καὶ διψώδεις καὶ τὰς κνήμας ἔχουσιν ἡλκωμένας ἀνιάτως διὰ τὰ συνεχῆ πτώματα καὶ τῶν κυνῶν τὰ δήγματα.
τοιαῦτα μὲν αὐτῶν τὰ γνωρίσματα· γινώσκειν δὲ χρὴ μελαγχολίας εἶδος εἶναι τὴν λυκανθρωπίαν, ἣν θεραπεύσεις κατὰ τὸν χρόνον τῆς ἐπισημασίας τέμνων φλέβα καὶ κενῶν τοῦ αἵματος ἄχρι λειποθυμίας καὶ διαιτῶν τὸν κάμνοντα ταῖς εὐχύμοις τροφαῖς. κεχρήσθω δὲ λουτροῖς γλυκέσιν, εἶτα ὀρρῷ γάλακτος χρησάμενος ἐπὶ τρεῖς ἡμέρας κάθαιρε τῇ διὰ τῆς κολυκυνθίδος ἱερᾷ Ῥούφου ἢ Ἀρχιγένους ἢ Ἰούστου, δεύτερον καὶ τρίτον παρέχων ἐκ διαστημάτων. μετὰ δὲ τὰς καθάρσεις καὶ τῇ διὰ τῶν ἐχιδνῶν θηριακῇ χρηστέον. καὶ τὰ ἄλλα παραληπτέον ὅσα ἐπὶ τῆς μελαγχολίας προείρηται. εἰς ἑσπέραν δὲ ἐπερχομένης ἤδη τῆς νόσου τοῖς ὕπνον εἰωθόσιν ἐμποιεῖν ἐπιβρέγμασι τῆς κεφαλῆς χρῆσθαι καὶ ὀσφραντοῖς τοιούτοις καὶ ὀπίῳ διαχρίειν τοὺς μυκτῆρας, ἐνίοτε δὲ καὶ ποτίζειν τινὰ τῶν ὑπνωτικῶν.
Marcellus Sideta apud Aetius of Amida, Libri medicinales 6.11, 151,21–152,12 Olivieri
Not much is know about Marcellus of Side, except what is recorded in the Suda:
“Marcellus Sideta, doctor at the time of Marcus [Aurelius] Antoninus. He wrote forty-two medical books in epic verse, among which is also On Werewolves.”
Μάρκελλος Σιδήτης, ἰατρός, ἐπὶ Μάρκου Ἀντωνίνου. οὗτος ἔγραψε δι' ἐπῶν ἡρωϊκῶν βιβλία ἰατρικὰ δύο καὶ μ’, ἐν οἷς καὶ περὶ λυκανθρώπου.
Suda μ, entry 205