Op, you say people diagnosed with epilepsy are marginalised. I think you're wrong. If anything, in the past there definitely was a stigma attached to it (possessed by evil spirits and what have you) which now medical explanations etc have disproved. I think a lot of people really understand epilepsy now, or at the very least have knowledge of it.
Question to those with epilepsy: Do you find the medication makes you slower mentally? I ask because my brother used to be rather bright as a very young child and now he has a great deal of difficulty retaining any information at all. He could spend forever learning something (like spellings for example) and not remember it at all the next day, which he finds very frustrating as he knows damn well he's learned it. He's also now on medication for ADHD so it would be that either.