I have a seizure disorder.

Old fashioned word is “Fit”

Hi there Roy, you could always tell people that you have seizures! Instead of epilepsy! Because you are right the word epilepsy makes a lot of people scared of people with epilepsy I am so tired of having people look. At me strange with I say epilepsy so I just let them know upfront I have seizures!

Educate Yourself

I have a ….
Condition
Disorder / Seizure Disorder
I have spells ( seizure )

Those are the alternative words I use for Epilepsy and seizure.