When I attended (a million years ago) there was a sister who had eplilepsy and she would regularly have siezures during the meetings. Uncontrolable shaking fits. It was as if nothing was going on. Just hold her in the chair so she won't drop to the floor, stick a pencil in her mouth so she don't swallow her tounge and carry on.
I remember a boy at a circuit assembly who was having an apparent epileptic seizure. The circuit overseer giving the talk stopped and pointed in his direction--asking that the young man who is making all those contortions, please stop.