First thing: Be Calm, this is NOT a life threatening problem (unless you play next to a cliff).
2nd thing: Epilepsy means:''We dont know what the hell caused the seizure.''
Yes medications are available to reduce the # and severity of the seizures. My Akita lived years without taking them. The seizures went away as strangely as they came, for no apparant reason. The duration was maybe a month with a few bad ones, then they tapered off over a few more months in # and severity. All I did was hold him and talk calmly and reassuringly during the time(some say they can hear you. I dont know, but it helped me thru it if nothing else).
Often, the dog will know it is about to happen and come to you acting strangely. IT IS VITALLY IMPORTANT to comfort your dog at that time as it is HIGH ODDS you may be able to reduce the severity or completely divert the occurance of the seizure! (I am not making this up and it is not a home remedy. I read it in literature by some national Vet Ass'n in a booklet I got at my vet's.) It scared the CRAP out of me the first time it happened (bet you know that feeling), and only the knowledge that I must be the calm/reassuring one made me suck it up and pull my boy thru his crisis.
Take heart, this is a relatively minor problem. It just looks bad to someone who hasnt experienced it. Work with your vet and the odds are you can beat it.