Byzantine medicine: Alexandros of Tralleis (approx. 525 - 605): 12 books about medicine (Volume I, Chapter 15)
"The proof that epilepsy originates in the stomach lies in the fact that a feeling of restlessness and gnawing begins in the stomach and then the patient feels the affliction approaching. [...]
As soon as the patient gets up in the morning and has emptied his bowels, he should drink an infusion of hyssop, which will do him a lot of good, as many have been healed simply by drinking this, and were only taken ill two or three times.
It is forbidden to drink undiluted wine after taking a bath as nothing can set off a seizure more easily than this - and indeed undiluted wine is in general dangerous for all epileptics."