Answer:
Basically to know if you have it you need to get an EEG which is basically a brain scan. ALso you would need to see a docter, but one of the quickest ways you can figure out if you may have it is if you have seizures that happen at random times. For example if you sleep on a water bed and someone tells you that you were jerking and twitching in your sleep then you may have Epilepsy. Take this from someone who just got diagnosed 'Epilepsy-Free' earlier last year