As you probably know many people live fairly normal lives with “epilepsy” (known as “seizure disorder” to physicians).There are medications that humans can take which,as I said,allows them to live reasonably normal...if not entirely normal...lives.My guess is that a seizure disorder can be successfully addressed in dogs as well.
Golden Retrievers are prone to epilepsy. My 6 yr old has been on phenobarb for 2 years to control them, but a breakthrough seizure happens now and then. Usually occur when he jerks awake from napping in the evening, the worse he ever had was 4 hour grand mal at 4 in the morning. Almost lost him with that one. I never equated him having a seizure with flea killer liquid until I used a popular once a month liquid that I just squeezed a tiny bit down his back once. He was foaming at the mouth and in a seizure within a few hours. I treat his ticks and trouble spots with a puppy spray by spot applying the liquid with a q-tip now. No collars, sprays or liquid in broad coverage applications anymore.