ταῦτα δηλώσω αὐτός τε νοσήσας καὶ αὐτὸς ἰδὼν ἄλλους πάσχοντας → I shall describe those symptoms, since I myself had the disease and witnessed as well what others were suffering
διαβαίνω, ἐκβάλλω, διαπεράω, ἐξαλλάσσω, διαφύομαι, ἐξάγω, ἀναβαίνω