I'm blessed with being able to control my tonic-clonic seizures via meds. Nonetheless, I hid my condition for 36 years. Finally tired of the stigma against epilepsy, I began opening up, choosing moments (ideally somewhat casual ones) to tell people I knew well of my epilepsy.
The stigma against epilepsy is culturally based, as well as a product of ignorance. It's up to us, through open discussions and teaching others, to change the perceptions about epilepsy, do away with the stigma.