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
illūcĕo: (inl-), ēre, v. n. in-luceo,
I to shine in or on, to light up, illuminate, give light (very rare): pix atra tuo capiti illuceat, Plaut. Capt. 3, 4, 65: tota domus tua veri fulgore solis illuceat, Ambros. in Psa. 118, Serm. 19, 39.