Epilepsy is strictly medical; use it to discuss health, not as a metaphor or insult. Many organizations work to support those living with epilepsy.
Pro Tip 2/3
Not Contagious
Understand that epilepsy isn't contagious; you can't 'catch' it from someone else. Her classmates learned epilepsy couldn't be spread, so they played together freely.
Pro Tip 3/3
Seriousness
Epilepsy varies in seriousness; some have infrequent seizures, others more severe impacts. Despite his epilepsy, he leads a full, active life with only occasional interruptions.